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Search results for: fifth generation broadband
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3489</div> </div> </div> </div> <h1 class="mt-3 mb-3 text-center" style="font-size:1.6rem;">Search results for: fifth generation broadband</h1> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3489</span> Mobile WiMAX Network based Wireless Communication on Rail: An Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Vinod%20Kumar%20Jatav">Vinod Kumar Jatav</a>, <a href="https://publications.waset.org/abstracts/search?q=Dr.%20Vrijendra%20Singh"> Dr. Vrijendra Singh</a> </p> <p class="card-text"><strong>Abstract:</strong></p> WiMAX is an emerging wireless technology designed by WiMAX forum. WiMAX technology delivers broadband internet access with QoS, mobility and robust security. WiMAX is among the prominent mobile broadband wireless technology which laid the foundation for the next generation networks (NGN). The next-generation communication system for railway should facilitate high level network availability, fast mobility for high speed trains with reliability, high handover rate, the firmness of train operations, and high QoS. The system should also be capable to provide various railway services by transmitting big data efficiently. One of the most promising technologies for the next generation railway wireless communication is Mobile WiMAX. This paper analyses some of the network architectures for railway wireless communication and considers the elementary concepts to facilitate the users with broadband internet access on trains. The paper aims to recognize the suitability of Mobile WiMAX technology for the special requirements of broadband internet facilities and wireless telecommunication services of Railways. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Broadband%20internet" title="Broadband internet">Broadband internet</a>, <a href="https://publications.waset.org/abstracts/search?q=IEEE%20802.16e" title=" IEEE 802.16e"> IEEE 802.16e</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20WiMAX" title=" mobile WiMAX"> mobile WiMAX</a>, <a href="https://publications.waset.org/abstracts/search?q=Railway%20wireless%20communication" title=" Railway wireless communication "> Railway wireless communication </a> </p> <a href="https://publications.waset.org/abstracts/15676/mobile-wimax-network-based-wireless-communication-on-rail-an-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/15676.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">524</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3488</span> Optimal Parameters of Two-Color Ionizing Laser Pulses for Terahertz Generation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=I.%20D.%20Laryushin">I. D. Laryushin</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20A.%20Kostin"> V. A. Kostin</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20A.%20Silaev"> A. A. Silaev</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20V.%20Vvedenskii"> N. V. Vvedenskii</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Generation of broadband intense terahertz (THz) radiation attracts reasonable interest due to various applications, such as the THz time-domain spectroscopy, the probing and control of various ultrafast processes, the THz imaging with subwavelength resolution, and many others. One of the most promising methods for generating powerful and broadband terahertz pulses is based on focusing two-color femtosecond ionizing laser pulses in gases, including ambient air. For this method, the amplitudes of terahertz pulses are determined by the free-electron current density remaining in a formed plasma after the passage of the laser pulse. The excitation of this residual current density can be treated as multi-wave mixing: Аn effective generation of terahertz radiation is possible only when the frequency ratio of one-color components in the two-color pulse is close to irreducible rational fraction a/b with small odd sum a + b. This work focuses on the optimal parameters (polarizations and intensities) of laser components for the strongest THz generation. The optimal values of parameters are found numerically and analytically with the use of semiclassical approach for calculating the residual current density. For frequency ratios close to a/(a ± 1) with natural a, the strongest THz generation is shown to take place when the both laser components have circular polarizations and equal intensities. For this optimal case, an analytical formula for the residual current density was derived. For the frequency ratios such as 2/5, the two-color ionizing pulses with circularly polarized components practically do not excite the residual current density. However, the optimal parameters correspond generally to specific elliptical (not linear) polarizations of the components and intensity ratios close to unity. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=broadband%20terahertz%20radiation" title="broadband terahertz radiation">broadband terahertz radiation</a>, <a href="https://publications.waset.org/abstracts/search?q=ionization" title=" ionization"> ionization</a>, <a href="https://publications.waset.org/abstracts/search?q=laser%20plasma" title=" laser plasma"> laser plasma</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrashort%20two-color%20pulses" title=" ultrashort two-color pulses"> ultrashort two-color pulses</a> </p> <a href="https://publications.waset.org/abstracts/77086/optimal-parameters-of-two-color-ionizing-laser-pulses-for-terahertz-generation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/77086.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">211</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3487</span> Performance Analysis in 5th Generation Massive Multiple-Input-Multiple-Output Systems</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jihad%20S.%20Daba">Jihad S. Daba</a>, <a href="https://publications.waset.org/abstracts/search?q=Jean-Pierre%20Dubois"> Jean-Pierre Dubois</a>, <a href="https://publications.waset.org/abstracts/search?q=Georges%20El%20Soury"> Georges El Soury</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Fifth generation wireless networks guarantee significant capacity enhancement to suit more clients and services at higher information rates with better reliability while consuming less power. The deployment of massive multiple-input-multiple-output technology guarantees broadband wireless networks with the use of base station antenna arrays to serve a large number of users on the same frequency and time-slot channels. In this work, we evaluate the performance of massive multiple-input-multiple-output systems (MIMO) systems in 5<sup>th</sup> generation cellular networks in terms of capacity and bit error rate. Several cases were considered and analyzed to compare the performance of massive MIMO systems while varying the number of antennas at both transmitting and receiving ends. We found that, unlike classical MIMO systems, reducing the number of transmit antennas while increasing the number of antennas at the receiver end provides a better solution to performance enhancement. In addition, enhanced orthogonal frequency division multiplexing and beam division multiple access schemes further improve the performance of massive MIMO systems and make them more reliable. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=beam%20division%20multiple%20access" title="beam division multiple access">beam division multiple access</a>, <a href="https://publications.waset.org/abstracts/search?q=D2D%20communication" title=" D2D communication"> D2D communication</a>, <a href="https://publications.waset.org/abstracts/search?q=enhanced%20OFDM" title=" enhanced OFDM"> enhanced OFDM</a>, <a href="https://publications.waset.org/abstracts/search?q=fifth%20generation%20broadband" title=" fifth generation broadband"> fifth generation broadband</a>, <a href="https://publications.waset.org/abstracts/search?q=massive%20MIMO" title=" massive MIMO"> massive MIMO</a> </p> <a href="https://publications.waset.org/abstracts/96696/performance-analysis-in-5th-generation-massive-multiple-input-multiple-output-systems" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/96696.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">258</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3486</span> How Does Improving the Existing DSL Infrastructure Influences the Expansion of Fiber Technology?</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Peter%20Winzer">Peter Winzer</a>, <a href="https://publications.waset.org/abstracts/search?q=Erik%20Massarczyk"> Erik Massarczyk</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Experts, enterprises and operators expect that the bandwidth request will increase up to rates of 100 to 1,000 Mbps within several years. Therefore the most important question is, which technology shall satisfy the future consumer broadband demands. Currently the consensus is, that the fiber technology has the best technical characteristics to achieve such the high bandwidth rates. But fiber technology is so far very cost-intensive and resource consuming. To avoid these investments, operators are concentrating to upgrade the existing copper and hybrid fiber coax infrastructures. This work presents a comparison of the copper and fiber technologies including an overview about the current German broadband market. Both technologies are reviewed in the terms of demand, willingness to pay and economic efficiency in connection with the technical characteristics. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=broadband%20customer%20demand" title="broadband customer demand">broadband customer demand</a>, <a href="https://publications.waset.org/abstracts/search?q=fiber%20development" title=" fiber development"> fiber development</a>, <a href="https://publications.waset.org/abstracts/search?q=g.fast" title=" g.fast"> g.fast</a>, <a href="https://publications.waset.org/abstracts/search?q=vectoring" title=" vectoring"> vectoring</a>, <a href="https://publications.waset.org/abstracts/search?q=willingness%20to%20pay%20for%20broadband%20services" title=" willingness to pay for broadband services"> willingness to pay for broadband services</a> </p> <a href="https://publications.waset.org/abstracts/27608/how-does-improving-the-existing-dsl-infrastructure-influences-the-expansion-of-fiber-technology" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/27608.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">469</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3485</span> Design of Broadband Power Divider for 3G and 4G Applications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20El-Akhdar">A. M. El-Akhdar</a>, <a href="https://publications.waset.org/abstracts/search?q=A.%20M.%20El-Tager"> A. M. El-Tager</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20M.%20El-Hennawy"> H. M. El-Hennawy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper presents a broadband power divider with equal power division ratio. Two sections of transmission line transformers based on coupled microstrip lines are applied to obtain broadband performance. In addition, design methodology is proposed for the novel structure. A prototype is designed, simulated to operate in the band from 2.1 to 3.8 GHz to fulfill the requirements of 3G and 4G applications. The proposed structure features reduced size and less resistors than other conventional techniques. Simulation verifies the proposed idea and design methodology. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=power%20dividers" title="power dividers">power dividers</a>, <a href="https://publications.waset.org/abstracts/search?q=coupled%20lines" title=" coupled lines"> coupled lines</a>, <a href="https://publications.waset.org/abstracts/search?q=microstrip" title=" microstrip"> microstrip</a>, <a href="https://publications.waset.org/abstracts/search?q=4G%20applications" title=" 4G applications"> 4G applications</a> </p> <a href="https://publications.waset.org/abstracts/14924/design-of-broadband-power-divider-for-3g-and-4g-applications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/14924.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">477</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3484</span> 3G or 4G: A Predilection for Millennial Generation of Indian Society</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Rishi%20Prajapati">Rishi Prajapati</a> </p> <p class="card-text"><strong>Abstract:</strong></p> 3G is the abbreviation of third generation of wireless mobile telecommunication technologies. 3G is a mode that finds application in wireless voice telephony, mobile internet access, fixed wireless internet access, video calls and mobile TV. It also provides mobile broadband access to smartphones and mobile modems in laptops and computers. The first 3G networks were introduced in 1998, followed by 4G networks in 2008. 4G is the abbreviation of fourth generation of wireless mobile telecommunication technologies. 4G is termed to be the advanced form of 3G. 4G was firstly introduced in South Korea in 2007. Many abstracts have floated researches that depicted the diversity and similarity between the third and the fourth generation of wireless mobile telecommunications technology, whereas this abstract reflects the study that focuses on analyzing the preference between 3G versus 4G given by the elite group of the Indian society who are known as adolescents or the Millennial Generation aging from 18 years to 25 years. The Millennial Generation was chosen for this study as they have the easiest access to the latest technology. A sample size of 200 adolescents was selected and a structured survey was carried out which had several closed ended as well as open ended questions, to aggregate the result of this study. It was made sure that the effect of environmental factors on the subjects was as minimal as possible. The data analysis comprised of primary data collection reflecting it as quantitative research. The rationale behind this research is to give brief idea of how 3G and 4G are accepted by the Millennial Generation in India. The findings of this research would materialize a framework which depicts whether Millennial Generation would prefer 4G over 3G or vice versa. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fourth%20generation" title="fourth generation">fourth generation</a>, <a href="https://publications.waset.org/abstracts/search?q=wireless%20telecommunication%20technology" title=" wireless telecommunication technology"> wireless telecommunication technology</a>, <a href="https://publications.waset.org/abstracts/search?q=Indian%20society" title=" Indian society"> Indian society</a>, <a href="https://publications.waset.org/abstracts/search?q=millennial%20generation" title=" millennial generation"> millennial generation</a>, <a href="https://publications.waset.org/abstracts/search?q=market%20research" title=" market research"> market research</a>, <a href="https://publications.waset.org/abstracts/search?q=third%20generation" title=" third generation"> third generation</a> </p> <a href="https://publications.waset.org/abstracts/56902/3g-or-4g-a-predilection-for-millennial-generation-of-indian-society" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/56902.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">270</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3483</span> Varieties of State Role: Through the Case of East Asia's Broadband Policy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Heesu%20Kim">Heesu Kim</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper determines the varieties of state roles played in East Asia’s telecommunication market, regarding broadband industry. Technological capacity and the relationship between state and market affect the varieties of state role. In explaining the state’s engagement in the market, technology has always been considered as a necessary and sufficient condition. However technology variable has been useful in only explaining the extent of state’s involvement. This paper contributes by bringing in the political-economic factor, which is the relationship between state and market. This factor aids in distinguishing the varieties of state role played in emerging industries. Interaction between these two variables distinguishes 4 types of state roles played in the broadband industry. These roles are distinguished and characterized by the intensity of state’s intervention and the existence of technological capacity. This paper classifies four types of state role through the case of Singapore, China, Taiwan and Korea’s broadband industrial policy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=East%20Asia" title="East Asia">East Asia</a>, <a href="https://publications.waset.org/abstracts/search?q=entrpreneurial%20state" title=" entrpreneurial state"> entrpreneurial state</a>, <a href="https://publications.waset.org/abstracts/search?q=industrial%20policy" title=" industrial policy"> industrial policy</a>, <a href="https://publications.waset.org/abstracts/search?q=regulatory%20state" title=" regulatory state"> regulatory state</a>, <a href="https://publications.waset.org/abstracts/search?q=technological%20capacity" title=" technological capacity"> technological capacity</a> </p> <a href="https://publications.waset.org/abstracts/86317/varieties-of-state-role-through-the-case-of-east-asias-broadband-policy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/86317.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">172</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3482</span> High Gain Broadband Plasmonic Slot Nano-Antenna</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=H.%20S.%20Haroyan">H. S. Haroyan</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20R.%20Tadevosyan"> V. R. Tadevosyan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> High gain broadband plasmonic slot nano-antenna has been considered. The theory of plasmonic slot nano-antenna (PSNA) has been developed. The analytical model takes into account also the electrical field inside the metal due to imperfectness of metal in optical range, as well as numerical investigation based on FEM method has been realized. It should be mentioned that Yagi-Uda configuration improves directivity in the plane of structure. In contrast, in this paper the possibility of directivity improvement of proposed PSNA in perpendicular plane of structure by using reflection metallic surface placed under the slot in fixed distance has been demonstrated. It is well known that a directivity improvement brings to the antenna gain increasing. This method of diagram improving is also well known from RF antenna design theory. Moreover the improvement of directivity in the perpendicular plane gives more flexibility in such application as improving the light and atom, ion, molecule interactions by using such type of plasmonic slot antenna. By the analogy of dipole type optical antennas the widening of working wavelengths has been realized by using bowtie geometry of slots, which made the antenna broadband. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=broadband%20antenna" title="broadband antenna">broadband antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20gain" title=" high gain"> high gain</a>, <a href="https://publications.waset.org/abstracts/search?q=slot%20nano-antenna" title=" slot nano-antenna"> slot nano-antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=plasmonics." title=" plasmonics. "> plasmonics. </a> </p> <a href="https://publications.waset.org/abstracts/28413/high-gain-broadband-plasmonic-slot-nano-antenna" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28413.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">370</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3481</span> Spatially Encoded Hyperspectral Compressive Microscope for Broadband VIS/NIR Imaging</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Luk%C3%A1%C5%A1%20Klein">Lukáš Klein</a>, <a href="https://publications.waset.org/abstracts/search?q=Karel%20%C5%BD%C3%ADdek"> Karel Žídek</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Hyperspectral imaging counts among the most frequently used multidimensional sensing methods. While there are many approaches to capturing a hyperspectral data cube, optical compression is emerging as a valuable tool to reduce the setup complexity and the amount of data storage needed. Hyperspectral compressive imagers have been created in the past; however, they have primarily focused on relatively narrow sections of the electromagnetic spectrum. A broader spectral study of samples can provide helpful information, especially for applications involving the harmonic generation and advanced material characterizations. We demonstrate a broadband hyperspectral microscope based on the single-pixel camera principle. Captured spatially encoded data are processed to reconstruct a hyperspectral cube in a combined visible and near-infrared spectrum (from 400 to 2500 nm). Hyperspectral cubes can be reconstructed with a spectral resolution of up to 3 nm and spatial resolution of up to 7 µm (subject to diffraction) with a high compressive ratio. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=compressive%20imaging" title="compressive imaging">compressive imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=hyperspectral%20imaging" title=" hyperspectral imaging"> hyperspectral imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=near-infrared%20spectrum" title=" near-infrared spectrum"> near-infrared spectrum</a>, <a href="https://publications.waset.org/abstracts/search?q=single-pixel%20camera" title=" single-pixel camera"> single-pixel camera</a>, <a href="https://publications.waset.org/abstracts/search?q=visible%20spectrum" title=" visible spectrum"> visible spectrum</a> </p> <a href="https://publications.waset.org/abstracts/155053/spatially-encoded-hyperspectral-compressive-microscope-for-broadband-visnir-imaging" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/155053.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">89</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3480</span> Design of Broadband W-Slotted Microstrip Patch Antenna </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Neeraj%20G.%20Nahata">Neeraj G. Nahata</a>, <a href="https://publications.waset.org/abstracts/search?q=K.%20S.%20Bhagat"> K. S. Bhagat</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Microstrip patch antenna widely used in communication area because it offers low profile, narrow bandwidth, high gain, and compact in size. It has big disadvantage of narrow bandwidth. To improve the bandwidth a W-slot technique is used, it is efficient to enhance the bandwidth of antenna. The feeding point of antenna is very important for efficient operation, so coaxial feeding technique is applied to microstrip patch antenna for impedance matching. A broadband W-slot microstrip patch antenna is designed successfully which attains a bandwidth of 22.74% at 10dB return loss with centre frequency of 4.5GHz and also it attains maximum directivity 8.78dBi. It is designed by cutting a W-slot into the patch of antenna, because of this resonant slot, the antenna gives broad bandwidth. This antenna is best suitable for C-band frequency spectrum. The proposed antenna is designed and simulated using IE3D software. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=broadband" title="broadband">broadband</a>, <a href="https://publications.waset.org/abstracts/search?q=microstrip%20antenna" title=" microstrip antenna"> microstrip antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=VSWR" title=" VSWR"> VSWR</a>, <a href="https://publications.waset.org/abstracts/search?q=W-slotted%20patch" title=" W-slotted patch"> W-slotted patch</a> </p> <a href="https://publications.waset.org/abstracts/25341/design-of-broadband-w-slotted-microstrip-patch-antenna" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/25341.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">320</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3479</span> Study the Effect of Leading-Edge Serration at Owl Wing Feathers on Flow-Induced Noise Generation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Suprabha%20Islam">Suprabha Islam</a>, <a href="https://publications.waset.org/abstracts/search?q=Sifat%20Ullah%20Tanzil"> Sifat Ullah Tanzil</a> </p> <p class="card-text"><strong>Abstract:</strong></p> During past few decades, being amazed by the excellent silent flight of owl, scientists have been trying to demystify the unique features of its wing feathers. Our present study is dedicated to taking our understanding further on this phenomenon. In this present study, a numerical investigation was performed to analyze how the shape of the leading-edge serration at owl wing feathers effects the flow-induced noise generation. For the analysis, an owl inspired single feather wing model was prepared for both with and without serrations at the leading edge. The serration profiles were taken at different positions of the vane length for a single feather. The broadband noise was studied to quantify the local contribution to the total acoustic power generated by the flow, where the results clearly showed the effect of serrations in reducing the noise generation. It was also clearly visible that the shape of the serration has a very strong influence on noise generation. The frequency spectrum of noise was also analyzed and a strong relation was found between the shape of the serration and the noise generation. It showed that the noise suppression is strongly influenced by the height to length ratio of the serration. With the increase in height to length ratio, the noise suppression is enhanced further. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=aeroacoustics" title="aeroacoustics">aeroacoustics</a>, <a href="https://publications.waset.org/abstracts/search?q=aerodynamic" title=" aerodynamic"> aerodynamic</a>, <a href="https://publications.waset.org/abstracts/search?q=biomimetics" title=" biomimetics"> biomimetics</a>, <a href="https://publications.waset.org/abstracts/search?q=serrations" title=" serrations"> serrations</a> </p> <a href="https://publications.waset.org/abstracts/90649/study-the-effect-of-leading-edge-serration-at-owl-wing-feathers-on-flow-induced-noise-generation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/90649.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">169</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3478</span> Generation of Ultra-Broadband Supercontinuum Ultrashort Laser Pulses with High Energy</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Walid%20Tawfik">Walid Tawfik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The interaction of intense short nano- and picosecond laser pulses with plasma leads to reach variety of important applications, including time-resolved laser induced breakdown spectroscopy (LIBS), soft x-ray lasers, and laser-driven accelerators. The progress in generating of femtosecond down to sub-10 fs optical pulses has opened a door for scientists with an essential tool in many ultrafast phenomena, such as femto-chemistry, high field physics, and high harmonic generation (HHG). The advent of high-energy laser pulses with durations of few optical cycles provided scientists with very high electric fields, and produce coherent intense UV to NIR radiation with high energy which allows for the investigation of ultrafast molecular dynamics with femtosecond resolution. In this work, we could experimentally achieve the generation of a two-octave-wide supercontinuum ultrafast pulses extending from ultraviolet at 3.5 eV to the near-infrared at 1.3 eV in neon-filled capillary fiber. These pulses are created due to nonlinear self-phase modulation (SPM) in neon as a nonlinear medium. The measurements of the generated pulses were performed using spectral phase interferometry for direct electric-field reconstruction. A full characterization of the output pulses was studied. The output pulse characterization includes the pulse width, the beam profile, and the spectral bandwidth. Under optimization conditions, the reconstructed pulse intensity autocorrelation function was exposed for the shorts possible pulse duration to achieve transform-limited pulses with energies up to 600µJ. Furthermore, the effect of variation of neon pressure on the pulse-width was studied. The nonlinear SPM found to be increased with the neon pressure. The obtained results may give an opportunity to monitor and control ultrafast transit interaction in femtosecond chemistry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=femtosecond%20laser" title="femtosecond laser">femtosecond laser</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrafast" title=" ultrafast"> ultrafast</a>, <a href="https://publications.waset.org/abstracts/search?q=supercontinuum" title=" supercontinuum"> supercontinuum</a>, <a href="https://publications.waset.org/abstracts/search?q=ultra-broadband" title=" ultra-broadband"> ultra-broadband</a> </p> <a href="https://publications.waset.org/abstracts/79479/generation-of-ultra-broadband-supercontinuum-ultrashort-laser-pulses-with-high-energy" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/79479.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">206</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3477</span> CPW-Fed Broadband Circularly Polarized Planar Antenna with Improved Ground</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gnanadeep%20Gudapati">Gnanadeep Gudapati</a>, <a href="https://publications.waset.org/abstracts/search?q=V.%20Annie%20Grace"> V. Annie Grace</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A broadband circular polarization (CP) feature is designed for a CPW-fed planar printed monopole antenna. A rectangle patch and an improved ground plane make up the antenna. The antenna's impedance bandwidth can be increased by adding a vertical stub and a horizontal slit in the ground plane. The measured results show that the proposed antenna has a wide 10-dB return loss bandwidth of 70.2% (4.35GHz, 3.7-8.1GHz) centered at 4.2 GHz. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=CPW-fed" title="CPW-fed">CPW-fed</a>, <a href="https://publications.waset.org/abstracts/search?q=circular%20polarised" title=" circular polarised"> circular polarised</a>, <a href="https://publications.waset.org/abstracts/search?q=FR4%20epoxy" title=" FR4 epoxy"> FR4 epoxy</a>, <a href="https://publications.waset.org/abstracts/search?q=slit%20and%20stub" title=" slit and stub"> slit and stub</a> </p> <a href="https://publications.waset.org/abstracts/144248/cpw-fed-broadband-circularly-polarized-planar-antenna-with-improved-ground" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/144248.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">147</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3476</span> New Design of a Broadband Microwave Zero Bias Power Limiter</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=K.%20Echchakhaoui">K. Echchakhaoui</a>, <a href="https://publications.waset.org/abstracts/search?q=E.%20Abdelmounim"> E. Abdelmounim</a>, <a href="https://publications.waset.org/abstracts/search?q=J.%20Zbitou"> J. Zbitou</a>, <a href="https://publications.waset.org/abstracts/search?q=H.%20Bennis"> H. Bennis</a>, <a href="https://publications.waset.org/abstracts/search?q=N.%20Ababssi"> N. Ababssi</a>, <a href="https://publications.waset.org/abstracts/search?q=M.%20Latrach"> M. Latrach</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper a new design of a broadband microwave power limiter is presented and validated into simulation by using ADS software (Advanced Design System) from Agilent technologies. The final circuit is built on microstrip lines by using identical Zero Bias Schottky diodes. The power limiter is designed by Associating 3 stages Schottky diodes. The obtained simulation results permit to validate this circuit with a threshold input power level of 0 dBm until a maximum input power of 30 dBm. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=Limiter" title="Limiter">Limiter</a>, <a href="https://publications.waset.org/abstracts/search?q=microstrip" title=" microstrip"> microstrip</a>, <a href="https://publications.waset.org/abstracts/search?q=zero-biais" title=" zero-biais"> zero-biais</a>, <a href="https://publications.waset.org/abstracts/search?q=ADS" title=" ADS"> ADS</a> </p> <a href="https://publications.waset.org/abstracts/17068/new-design-of-a-broadband-microwave-zero-bias-power-limiter" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17068.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">466</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3475</span> Broadband Ultrasonic and Rheological Characterization of Liquids Using Longitudinal Waves</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=M.%20Abderrahmane%20Mograne">M. Abderrahmane Mograne</a>, <a href="https://publications.waset.org/abstracts/search?q=Didier%20Laux"> Didier Laux</a>, <a href="https://publications.waset.org/abstracts/search?q=Jean-Yves%20Ferrandis"> Jean-Yves Ferrandis</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Rheological characterizations of complex liquids like polymer solutions present an important scientific interest for a lot of researchers in many fields as biology, food industry, chemistry. In order to establish master curves (elastic moduli vs frequency) which can give information about microstructure, classical rheometers or viscometers (such as Couette systems) are used. For broadband characterization of the sample, temperature is modified in a very large range leading to equivalent frequency modifications applying the Time Temperature Superposition principle. For many liquids undergoing phase transitions, this approach is not applicable. That is the reason, why the development of broadband spectroscopic methods around room temperature becomes a major concern. In literature many solutions have been proposed but, to our knowledge, there is no experimental bench giving the whole rheological characterization for frequencies about a few Hz (Hertz) to many MHz (Mega Hertz). Consequently, our goal is to investigate in a nondestructive way in very broadband frequency (A few Hz – Hundreds of MHz) rheological properties using longitudinal ultrasonic waves (L waves), a unique experimental bench and a specific container for the liquid: a test tube. More specifically, we aim to estimate the three viscosities (longitudinal, shear and bulk) and the complex elastic moduli (M*, G* and K*) respectively longitudinal, shear and bulk moduli. We have decided to use only L waves conditioned in two ways: bulk L wave in the liquid or guided L waves in the tube test walls. In this paper, we will present first results for very low frequencies using the ultrasonic tracking of a falling ball in the test tube. This will lead to the estimation of shear viscosity from a few mPa.s to a few Pa.s (Pascal second). Corrections due to the small dimensions of the tube will be applied and discussed regarding the size of the falling ball. Then the use of bulk L wave’s propagation in the liquid and the development of a specific signal processing in order to assess longitudinal velocity and attenuation will conduct to the longitudinal viscosity evaluation in the MHz frequency range. At last, the first results concerning the propagation, the generation and the processing of guided compressional waves in the test tube walls will be discussed. All these approaches and results will be compared to standard methods available and already validated in our lab. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=nondestructive%20measurement%20for%20liquid" title="nondestructive measurement for liquid">nondestructive measurement for liquid</a>, <a href="https://publications.waset.org/abstracts/search?q=piezoelectric%20transducer" title=" piezoelectric transducer"> piezoelectric transducer</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrasonic%20longitudinal%20waves" title=" ultrasonic longitudinal waves"> ultrasonic longitudinal waves</a>, <a href="https://publications.waset.org/abstracts/search?q=viscosities" title=" viscosities"> viscosities</a> </p> <a href="https://publications.waset.org/abstracts/60648/broadband-ultrasonic-and-rheological-characterization-of-liquids-using-longitudinal-waves" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/60648.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">265</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3474</span> Network Coding with Buffer Scheme in Multicast for Broadband Wireless Network</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Gunasekaran%20Raja">Gunasekaran Raja</a>, <a href="https://publications.waset.org/abstracts/search?q=Ramkumar%20Jayaraman"> Ramkumar Jayaraman</a>, <a href="https://publications.waset.org/abstracts/search?q=Rajakumar%20Arul"> Rajakumar Arul</a>, <a href="https://publications.waset.org/abstracts/search?q=Kottilingam%20Kottursamy"> Kottilingam Kottursamy</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Broadband Wireless Network (BWN) is the promising technology nowadays due to the increased number of smartphones. Buffering scheme using network coding considers the reliability and proper degree distribution in Worldwide interoperability for Microwave Access (WiMAX) multi-hop network. Using network coding, a secure way of transmission is performed which helps in improving throughput and reduces the packet loss in the multicast network. At the outset, improved network coding is proposed in multicast wireless mesh network. Considering the problem of performance overhead, degree distribution makes a decision while performing buffer in the encoding / decoding process. Consequently, BuS (Buffer Scheme) based on network coding is proposed in the multi-hop network. Here the encoding process introduces buffer for temporary storage to transmit packets with proper degree distribution. The simulation results depend on the number of packets received in the encoding/decoding with proper degree distribution using buffering scheme. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=encoding%20and%20decoding" title="encoding and decoding">encoding and decoding</a>, <a href="https://publications.waset.org/abstracts/search?q=buffer" title=" buffer"> buffer</a>, <a href="https://publications.waset.org/abstracts/search?q=network%20coding" title=" network coding"> network coding</a>, <a href="https://publications.waset.org/abstracts/search?q=degree%20distribution" title=" degree distribution"> degree distribution</a>, <a href="https://publications.waset.org/abstracts/search?q=broadband%20wireless%20networks" title=" broadband wireless networks"> broadband wireless networks</a>, <a href="https://publications.waset.org/abstracts/search?q=multicast" title=" multicast"> multicast</a> </p> <a href="https://publications.waset.org/abstracts/48856/network-coding-with-buffer-scheme-in-multicast-for-broadband-wireless-network" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/48856.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">410</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3473</span> Advantages of Multispectral Imaging for Accurate Gas Temperature Profile Retrieval from Fire Combustion Reactions</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Jean-Philippe%20Gagnon">Jean-Philippe Gagnon</a>, <a href="https://publications.waset.org/abstracts/search?q=Benjamin%20Saute"> Benjamin Saute</a>, <a href="https://publications.waset.org/abstracts/search?q=St%C3%A9phane%20Boubanga-Tombet"> Stéphane Boubanga-Tombet</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Infrared thermal imaging is used for a wide range of applications, especially in the combustion domain. However, it is well known that most combustion gases such as carbon dioxide (CO₂), water vapor (H₂O), and carbon monoxide (CO) selectively absorb/emit infrared radiation at discrete energies, i.e., over a very narrow spectral range. Therefore, temperature profiles of most combustion processes derived from conventional broadband imaging are inaccurate without prior knowledge or assumptions about the spectral emissivity properties of the combustion gases. Using spectral filters allows estimating these critical emissivity parameters in addition to providing selectivity regarding the chemical nature of the combustion gases. However, due to the turbulent nature of most flames, it is crucial that such information be obtained without sacrificing temporal resolution. For this reason, Telops has developed a time-resolved multispectral imaging system which combines a high-performance broadband camera synchronized with a rotating spectral filter wheel. In order to illustrate the benefits of using this system to characterize combustion experiments, measurements were carried out using a Telops MS-IR MW on a very simple combustion system: a wood fire. The temperature profiles calculated using the spectral information from the different channels were compared with corresponding temperature profiles obtained with conventional broadband imaging. The results illustrate the benefits of the Telops MS-IR cameras for the characterization of laminar and turbulent combustion systems at a high temporal resolution. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=infrared" title="infrared">infrared</a>, <a href="https://publications.waset.org/abstracts/search?q=multispectral" title=" multispectral"> multispectral</a>, <a href="https://publications.waset.org/abstracts/search?q=fire" title=" fire"> fire</a>, <a href="https://publications.waset.org/abstracts/search?q=broadband" title=" broadband"> broadband</a>, <a href="https://publications.waset.org/abstracts/search?q=gas%20temperature" title=" gas temperature"> gas temperature</a>, <a href="https://publications.waset.org/abstracts/search?q=IR%20camera" title=" IR camera"> IR camera</a> </p> <a href="https://publications.waset.org/abstracts/146725/advantages-of-multispectral-imaging-for-accurate-gas-temperature-profile-retrieval-from-fire-combustion-reactions" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/146725.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">143</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3472</span> Influence of Error Correction Codes on the Quality of Optical Broadband Connections</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Mouna%20Hemdi">Mouna Hemdi</a>, <a href="https://publications.waset.org/abstracts/search?q=Jamel%20bel%20Hadj%20Tahar"> Jamel bel Hadj Tahar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The increasing development of multimedia applications requiring the simultaneous transport of several different services contributes to the evolution of the need for very high-speed network. In this paper, we propose an effective solution to achieve the very high speed while retaining elements of the optical transmission channel. So our study focuses on error correcting codes that aim for quality improvement on duty. We present a comparison of the quality of service for single channels and integrating the code BCH, RS and LDPC in order to find the best code in the different conditions of the transmission. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=code%20error%20correction" title="code error correction">code error correction</a>, <a href="https://publications.waset.org/abstracts/search?q=high%20speed%20broadband" title=" high speed broadband"> high speed broadband</a>, <a href="https://publications.waset.org/abstracts/search?q=optical%20transmission" title=" optical transmission"> optical transmission</a>, <a href="https://publications.waset.org/abstracts/search?q=information%20systems%20security" title=" information systems security"> information systems security</a> </p> <a href="https://publications.waset.org/abstracts/28490/influence-of-error-correction-codes-on-the-quality-of-optical-broadband-connections" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/28490.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">393</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3471</span> Pruning Algorithm for the Minimum Rule Reduct Generation </h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Sahin%20Emrah%20Amrahov">Sahin Emrah Amrahov</a>, <a href="https://publications.waset.org/abstracts/search?q=Fatih%20Aybar"> Fatih Aybar</a>, <a href="https://publications.waset.org/abstracts/search?q=Serhat%20Dogan"> Serhat Dogan</a> </p> <p class="card-text"><strong>Abstract:</strong></p> In this paper we consider the rule reduct generation problem. Rule Reduct Generation (RG) and Modified Rule Generation (MRG) algorithms, that are used to solve this problem, are well-known. Alternative to these algorithms, we develop Pruning Rule Generation (PRG) algorithm. We compare the PRG algorithm with RG and MRG. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=rough%20sets" title="rough sets">rough sets</a>, <a href="https://publications.waset.org/abstracts/search?q=decision%20rules" title=" decision rules"> decision rules</a>, <a href="https://publications.waset.org/abstracts/search?q=rule%20induction" title=" rule induction"> rule induction</a>, <a href="https://publications.waset.org/abstracts/search?q=classification" title=" classification"> classification</a> </p> <a href="https://publications.waset.org/abstracts/17254/pruning-algorithm-for-the-minimum-rule-reduct-generation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/17254.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">528</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3470</span> Study the Relationship amongst Digital Finance, Renewable Energy, and Economic Development of Least Developed Countries</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Fatima%20Sohail">Fatima Sohail</a>, <a href="https://publications.waset.org/abstracts/search?q=Faizan%20Iftikhar"> Faizan Iftikhar</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper studies the relationship between digital finance, renewable energy, and the economic development of Pakistan and least developed countries from 2000 to 2022. The paper used panel analysis and generalized method of moments Arellano-Bond approaches. The findings show that under the growth model, renewable energy (RE) has a strong and favorable link with fixed broadband and mobile subscribers. However, FB and MD have a strong but negative association with the uptake of renewable energy (RE) in the average and simple model. This paper provides valuable insights for policymakers, investors of the digital economy. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=digital%20finance" title="digital finance">digital finance</a>, <a href="https://publications.waset.org/abstracts/search?q=renewable%20energy" title=" renewable energy"> renewable energy</a>, <a href="https://publications.waset.org/abstracts/search?q=economic%20development" title=" economic development"> economic development</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile%20subscription" title=" mobile subscription"> mobile subscription</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20broadband" title=" fixed broadband"> fixed broadband</a> </p> <a href="https://publications.waset.org/abstracts/187345/study-the-relationship-amongst-digital-finance-renewable-energy-and-economic-development-of-least-developed-countries" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/187345.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">40</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3469</span> The Design of Broadband 8x2 Phased Array 5G Antenna MIMO 28 GHz for Base Station</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Muhammad%20Saiful%20Fadhil%20Reyhan">Muhammad Saiful Fadhil Reyhan</a>, <a href="https://publications.waset.org/abstracts/search?q=Yusnita%20Rahayu"> Yusnita Rahayu</a>, <a href="https://publications.waset.org/abstracts/search?q=Fadhel%20Muhammadsyah"> Fadhel Muhammadsyah</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper proposed a design of 16 elements, 8x2 linear fed patch antenna array with 16 ports, for 28 GHz, mm-wave band 5G for base station. The phased array covers along the azimuth plane to provide the coverage to the users in omnidirectional. The proposed antenna is designed RT Duroid 5880 substrate with the overall size of 85x35.6x0.787 mm<sup>3</sup>. The array is operating from 27.43 GHz to 28.34 GHz with a 910 MHz impedance bandwidth. The gain of the array is 18.3 dB, while the suppression of the side lobes is -1.0 dB. The main lobe direction of the array is 15 deg. The array shows a high array gain throughout the impedance bandwidth with overall of VSWR is below 1.12. The design will be proposed in single element and 16 elements antenna. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=5G%20antenna" title="5G antenna">5G antenna</a>, <a href="https://publications.waset.org/abstracts/search?q=28%20GHz" title=" 28 GHz"> 28 GHz</a>, <a href="https://publications.waset.org/abstracts/search?q=MIMO" title=" MIMO"> MIMO</a>, <a href="https://publications.waset.org/abstracts/search?q=omnidirectional" title=" omnidirectional"> omnidirectional</a>, <a href="https://publications.waset.org/abstracts/search?q=phased%20array" title=" phased array"> phased array</a>, <a href="https://publications.waset.org/abstracts/search?q=base%20station" title=" base station"> base station</a>, <a href="https://publications.waset.org/abstracts/search?q=broadband" title=" broadband"> broadband</a> </p> <a href="https://publications.waset.org/abstracts/85986/the-design-of-broadband-8x2-phased-array-5g-antenna-mimo-28-ghz-for-base-station" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/85986.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">249</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3468</span> The Development Status of Terahertz Wave and Its Prospect in Wireless Communication</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yiquan%20Liao">Yiquan Liao</a>, <a href="https://publications.waset.org/abstracts/search?q=Quanhong%20Jiang"> Quanhong Jiang</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Since terahertz was observed by German scientists, we have obtained terahertz through different generation technologies of broadband and narrowband. Then, with the development of semiconductor and other technologies, the imaging technology of terahertz has become increasingly perfect. From the earliest application of nondestructive testing in aviation to the present application of information transmission and human safety detection, the role of terahertz will shine in various fields. The weapons produced by terahertz were epoch-making, which is a crushing deterrent against technologically backward countries. At the same time, terahertz technology in the fields of imaging, medical and livelihood, communication and communication are for the well-being of the country and the people. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=terahertz" title="terahertz">terahertz</a>, <a href="https://publications.waset.org/abstracts/search?q=imaging" title=" imaging"> imaging</a>, <a href="https://publications.waset.org/abstracts/search?q=communication" title=" communication"> communication</a>, <a href="https://publications.waset.org/abstracts/search?q=medical%20treatment" title=" medical treatment"> medical treatment</a> </p> <a href="https://publications.waset.org/abstracts/166653/the-development-status-of-terahertz-wave-and-its-prospect-in-wireless-communication" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/166653.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">99</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3467</span> The Impact of Information and Communication Technology on Bilateral Trade in Goods</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Christina%20Tay">Christina Tay</a> </p> <p class="card-text"><strong>Abstract:</strong></p> This paper investigates the impact of Information and Communication Technology (ICT) on bilateral trade in goods. Empirical analysis is performed on the United States and 34 partnering countries from 2000 to 2013. Our econometric model fits the data well, explaining 52% of the variation in trade flows for goods trade, 53.2% of the variation in trade flows for goods export and 48% of the variation in trade flows for goods import. For every 10% increase in fixed broadband Internet subscribers per 100 people increases, goods trade by 7.9% and for every 5% increase in fixed broadband Internet subscribers per 100 people, goods export increases by 11%. For every 1% increase in fixed telephone line penetration per 100 people, goods trade increases by 26.3%, goods export increases by 24.4% and goods import increases by 24.8%. For every 1% increase in mobile-cellular telephone subscriptions, goods trade decreases by 29.6% and goods export decreases by 27.1%, whilst for every 0.01% increase in mobile-cellular telephone subscriptions, goods import decreases by 34.3%. For every 1% increase in the percentage of population who used the Internet from any location in the last 12 months Internet, goods trade increases by 32.5%, goods export increases by 38.9%, goods import increases by 33%. All our trade determinants as well as our ICT variables have significances on goods exports for the US. We can also draw from our study that the US relies more rather heavily on ICT for its goods export compared to goods import. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=bilateral%20trade" title="bilateral trade">bilateral trade</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20broadband" title=" fixed broadband"> fixed broadband</a>, <a href="https://publications.waset.org/abstracts/search?q=fixed%20telephone" title=" fixed telephone"> fixed telephone</a>, <a href="https://publications.waset.org/abstracts/search?q=goods%20trade" title=" goods trade"> goods trade</a>, <a href="https://publications.waset.org/abstracts/search?q=information%20and%20communicative%20technologies" title=" information and communicative technologies"> information and communicative technologies</a>, <a href="https://publications.waset.org/abstracts/search?q=Internet" title=" Internet"> Internet</a>, <a href="https://publications.waset.org/abstracts/search?q=mobile-cellular%20phone" title=" mobile-cellular phone"> mobile-cellular phone</a> </p> <a href="https://publications.waset.org/abstracts/65672/the-impact-of-information-and-communication-technology-on-bilateral-trade-in-goods" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/65672.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">294</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3466</span> Creation of Ultrafast Ultra-Broadband High Energy Laser Pulses</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Walid%20Tawfik">Walid Tawfik</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The interaction of high intensity ultrashort laser pulses with plasma generates many significant applications, including soft x-ray lasers, time-resolved laser induced plasma spectroscopy LIPS, and laser-driven accelerators. The development in producing of femtosecond down to ten femtosecond optical pulses has facilitates scientists with a vital tool in a variety of ultrashort phenomena, such as high field physics, femtochemistry and high harmonic generation HHG. In this research, we generate a two-octave-wide ultrashort supercontinuum pulses with an optical spectrum extending from 3.5 eV (ultraviolet) to 1.3 eV (near-infrared) using a capillary fiber filled with neon gas. These pulses are formed according to nonlinear self-phase modulation in the neon gas as a nonlinear medium. The investigations of the created pulses were made using spectral phase interferometry for direct electric-field reconstruction (SPIDER). A complete description of the output pulses was considered. The observed characterization of the produced pulses includes the beam profile, the pulse width, and the spectral bandwidth. After reaching optimization conditions, the intensity of the reconstructed pulse autocorrelation function was applied for the shorts pulse duration to achieve transform limited ultrashort pulses with durations below 6-fs energies up to 600μJ. Moreover, the effect of neon pressure variation on the pulse width was examined. The nonlinear self-phase modulation realized to be increased with the pressure of the neon gas. The observed results may lead to an advanced method to control and monitor ultrashort transit interaction in femtochemistry. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=supercontinuum" title="supercontinuum">supercontinuum</a>, <a href="https://publications.waset.org/abstracts/search?q=ultrafast" title=" ultrafast"> ultrafast</a>, <a href="https://publications.waset.org/abstracts/search?q=SPIDER" title=" SPIDER"> SPIDER</a>, <a href="https://publications.waset.org/abstracts/search?q=ultra-broadband" title=" ultra-broadband"> ultra-broadband</a> </p> <a href="https://publications.waset.org/abstracts/107287/creation-of-ultrafast-ultra-broadband-high-energy-laser-pulses" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/107287.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">224</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3465</span> Homogenization of Culture and Its Effect on Preferred Reading of Media Communications Aimed at Members of Generation Z</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Philip%20Katz">Philip Katz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The research examines preferred reading of contemporary ads aimed at Generation Z through digital media. A qualitative analysis of focus groups consisting of members of Generation Z from 13 countries in Europe, the Middle East, South America and Asia has shown that, among this cohort, the influence of national culture does not create a strong impediment to understanding media communications targeting Generation Z. The familiarity of members of Generation Z with other countries’ popular culture through the spread of digital media has allowed a homogenizing effect and allowed a greater understanding of those cultures among this generation that lessens the impact of geographic separation. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=audience" title="audience">audience</a>, <a href="https://publications.waset.org/abstracts/search?q=Generation%20Z" title=" Generation Z"> Generation Z</a>, <a href="https://publications.waset.org/abstracts/search?q=marketing%20communication" title=" marketing communication"> marketing communication</a>, <a href="https://publications.waset.org/abstracts/search?q=preferred%20reading" title=" preferred reading"> preferred reading</a> </p> <a href="https://publications.waset.org/abstracts/128834/homogenization-of-culture-and-its-effect-on-preferred-reading-of-media-communications-aimed-at-members-of-generation-z" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/128834.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">177</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3464</span> Raman Scattering Broadband Spectrum Generation in Compact Yb-Doped Fiber Laser</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Yanrong%20Song">Yanrong Song</a>, <a href="https://publications.waset.org/abstracts/search?q=Zikai%20Dong"> Zikai Dong</a>, <a href="https://publications.waset.org/abstracts/search?q=Runqin%20Xu"> Runqin Xu</a>, <a href="https://publications.waset.org/abstracts/search?q=Jinrong%20Tian"> Jinrong Tian</a>, <a href="https://publications.waset.org/abstracts/search?q=Kexuan%20Li"> Kexuan Li</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Nonlinear polarization rotation (NPR) technique has become one of the main techniques to achieve mode-locked fiber lasers for its compactness, implementation, and low cost. In this paper, we demonstrate a compact mode-locked Yb-doped fiber laser based on NPR technique in the all normal dispersion (ANDi) regime. In the laser cavity, there are no physical filter and polarization controller in laser cavity. Mode-locked pulse train is achieved in ANDi regime based on NPR technique. The fiber birefringence induced filtering effect is the mainly reason for mode-locking. After that, an extra 20 m long single-mode fiber is inserted in two different positions, dissipative soliton operation and noise like pulse operations are achieved correspondingly. The nonlinear effect is obviously enhanced in the noise like pulse regime and broadband spectrum generated owing to enhanced stimulated Raman scattering effect. When the pump power is 210 mW, the central wavelength is 1030 nm, and the corresponding 1st order Raman scattering stokes wave generates and locates at 1075 nm. When the pump power is 370 mW, the 1st and 2nd order Raman scattering stokes wave generate and locate at 1080 nm, 1126 nm respectively. When the pump power is 600 mW, the Raman continuum is generated with cascaded multi-order stokes waves, and the spectrum extends to 1188 nm. The total flat spectrum is from 1000nm to 1200nm. The maximum output average power and pulse energy are 18.0W and 14.75nJ, respectively. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=fiber%20laser" title="fiber laser">fiber laser</a>, <a href="https://publications.waset.org/abstracts/search?q=mode-locking" title=" mode-locking"> mode-locking</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20polarization%20rotation" title=" nonlinear polarization rotation"> nonlinear polarization rotation</a>, <a href="https://publications.waset.org/abstracts/search?q=Raman%20scattering" title=" Raman scattering"> Raman scattering</a> </p> <a href="https://publications.waset.org/abstracts/74790/raman-scattering-broadband-spectrum-generation-in-compact-yb-doped-fiber-laser" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/74790.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">221</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3463</span> A Vertical Grating Coupler with High Efficiency and Broadband Operation</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Md.%20Asaduzzaman">Md. Asaduzzaman</a> </p> <p class="card-text"><strong>Abstract:</strong></p> A Silicon-on-insulator (SOI) perfectly vertical fibre-to-chip grating coupler is proposed and designed based on engineered subwavelength structures. The high directionality of the coupler is achieved by implementing step gratings to realize asymmetric diffraction and by applying effective index variation with auxiliary ultra-subwavelength gratings. The proposed structure is numerically analysed by using two-dimensional Finite Difference Time Domain (2D FDTD) method and achieves 96% (-0.2 dB) coupling efficiency and 39 nm 1-dB bandwidth. This highly efficient GC is necessary for applications where coupling efficiency between the optical fibre and nanophotonics waveguide is critically important, for instance, experiments of the quantum photonics integrated circuits. Such efficient and broadband perfectly vertical grating couplers are also significantly advantageous in highly dense photonic packaging. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=diffraction%20grating" title="diffraction grating">diffraction grating</a>, <a href="https://publications.waset.org/abstracts/search?q=FDTD" title=" FDTD"> FDTD</a>, <a href="https://publications.waset.org/abstracts/search?q=grating%20couplers" title=" grating couplers"> grating couplers</a>, <a href="https://publications.waset.org/abstracts/search?q=nanophotonic" title=" nanophotonic"> nanophotonic</a> </p> <a href="https://publications.waset.org/abstracts/163349/a-vertical-grating-coupler-with-high-efficiency-and-broadband-operation" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/163349.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">68</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3462</span> Attractiveness of Cafeteria Systems as Viewed by Generation Z</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Joanna%20Nie%C5%BCurawska">Joanna Nieżurawska</a>, <a href="https://publications.waset.org/abstracts/search?q=Hanna%20Karaszewska"> Hanna Karaszewska</a>, <a href="https://publications.waset.org/abstracts/search?q=Anna%20Dziadkiewicz"> Anna Dziadkiewicz</a> </p> <p class="card-text"><strong>Abstract:</strong></p> Contemporary conditions force companies to constantly implement changes and improvements, which is connected with plasticization of their activity in all spheres. Cafeteria systems are a good example of flexible remuneration systems. Cafeteria systems are well-known and often used in the United States, Great Britain and in Western Europe. In Poland, they are hardly ever used and greater flexibility in remuneration packages refers mainly to senior managers and executives. The main aim of this article is to research the attractiveness of the cafeteria system as viewed by generation Z. The additional aim of the article is to prioritize using the importance index of particular types of cafeteria systems from the generation Z’s perspective, as well as to identify the factors which determine the development of cafeteria systems in Poland. The research was conducted in June 2015 among 185 young employees (generation Z). The paper presents some of the results. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=cafeteria" title="cafeteria">cafeteria</a>, <a href="https://publications.waset.org/abstracts/search?q=generation%20X" title=" generation X"> generation X</a>, <a href="https://publications.waset.org/abstracts/search?q=generation%20Y" title=" generation Y"> generation Y</a>, <a href="https://publications.waset.org/abstracts/search?q=generation%20Z" title=" generation Z"> generation Z</a>, <a href="https://publications.waset.org/abstracts/search?q=flexible%20remuneration%20systems" title=" flexible remuneration systems"> flexible remuneration systems</a>, <a href="https://publications.waset.org/abstracts/search?q=plasticization%20of%20remuneration" title=" plasticization of remuneration"> plasticization of remuneration</a> </p> <a href="https://publications.waset.org/abstracts/42514/attractiveness-of-cafeteria-systems-as-viewed-by-generation-z" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/42514.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">408</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3461</span> Understanding Work-Related Values of Generation Z: The Lessons for Employers</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Neboj%C5%A1a%20Jani%C4%87ijevi%C4%87">Nebojša Janićijević</a> </p> <p class="card-text"><strong>Abstract:</strong></p> The paper presents the results of a study on work-related values of Generation Z, comprised of young people born between the late 1990s and 2010. Following Millennials, Generation Z is the first generation of digital natives. This is the reason, along with some other circumstances that accompanied them during their growing up, why Generation Z has somewhat different work-related values than previous generations. Since they are just beginning to enter the labor market and will be the majority of the workforce in the next decade or two, it is very important and useful for their employers to understand what Generation Z values when it comes to work. The study was conducted by surveying the students of the Faculty of Economics, University of Belgrade, Serbia, during 2022 and 2023. The research results show that Generation Z values safety, achievement, and status the most in the workplace. From the individual perspective, future employees consider it most important that their job provides good working conditions, recognition for the work performed, and the possibility of achievement. It is noticeable that Generation Z students, to a significant extent, expect to be protected and safe at work in the future, both in terms of the job itself and in terms of social relations. According to the research findings, Generation Z is relatively homogeneous, and no significant differences in work-related values were found among them, except by gender. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=generation%20Z" title="generation Z">generation Z</a>, <a href="https://publications.waset.org/abstracts/search?q=work%20related%20values" title=" work related values"> work related values</a>, <a href="https://publications.waset.org/abstracts/search?q=students" title=" students"> students</a>, <a href="https://publications.waset.org/abstracts/search?q=Serbia" title=" Serbia"> Serbia</a> </p> <a href="https://publications.waset.org/abstracts/192532/understanding-work-related-values-of-generation-z-the-lessons-for-employers" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/192532.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">25</span> </span> </div> </div> <div class="card paper-listing mb-3 mt-3"> <h5 class="card-header" style="font-size:.9rem"><span class="badge badge-info">3460</span> Semiconductor Device of Tapered Waveguide for Broadband Optical Communications</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/abstracts/search?q=Keita%20Iwai">Keita Iwai</a>, <a href="https://publications.waset.org/abstracts/search?q=Isao%20Tomita"> Isao Tomita</a> </p> <p class="card-text"><strong>Abstract:</strong></p> To expand the optical spectrum for use in broadband optical communications, we study the properties of a semiconductor waveguide device with a tapered structure including its third-order optical nonlinearity. Spectral-broadened output by the tapered structure has the potential to create a compact, built-in device for optical communications. Here we deal with a compound semiconductor waveguide, the material of which is the same as that of laser diodes used in the communication systems, i.e., InₓGa₁₋ₓAsᵧP₁₋ᵧ, which has large optical nonlinearity. We confirm that our structure widens the output spectrum sufficiently by controlling its taper form factor while utilizing the large nonlinear refraction of InₓGa₁₋ₓAsᵧP₁₋ᵧ. We also examine the taper effect for nonlinear optical loss. <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/abstracts/search?q=In%E2%82%93Ga%E2%82%81%E2%82%8B%E2%82%93As%E1%B5%A7P%E2%82%81%E2%82%8B%E1%B5%A7" title="InₓGa₁₋ₓAsᵧP₁₋ᵧ">InₓGa₁₋ₓAsᵧP₁₋ᵧ</a>, <a href="https://publications.waset.org/abstracts/search?q=waveguide" title=" waveguide"> waveguide</a>, <a href="https://publications.waset.org/abstracts/search?q=nonlinear%20refraction" title=" nonlinear refraction"> nonlinear refraction</a>, <a href="https://publications.waset.org/abstracts/search?q=spectral%20spreading" title=" spectral spreading"> spectral spreading</a>, <a href="https://publications.waset.org/abstracts/search?q=taper%20device" title=" taper device"> taper device</a> </p> <a href="https://publications.waset.org/abstracts/143322/semiconductor-device-of-tapered-waveguide-for-broadband-optical-communications" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/abstracts/143322.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">151</span> </span> </div> </div> <ul class="pagination"> <li class="page-item disabled"><span class="page-link">‹</span></li> <li class="page-item active"><span class="page-link">1</span></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=fifth%20generation%20broadband&page=2">2</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=fifth%20generation%20broadband&page=3">3</a></li> <li class="page-item"><a class="page-link" href="https://publications.waset.org/abstracts/search?q=fifth%20generation%20broadband&page=4">4</a></li> <li class="page-item"><a class="page-link" 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