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<button class="button is-small is-link">Go</button> </div> </div> </form> </div> </div> <ol class="breathe-horizontal" start="1"> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1809.03544">arXiv:1809.03544</a> <span> [<a href="https://arxiv.org/pdf/1809.03544">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Optics">physics.optics</span> </div> </div> <p class="title is-5 mathjax"> 0.52 V-mm ITO-based Mach-Zehnder Modulator in Silicon Photonics </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Amin%2C+R">Rubab Amin</a>, <a href="/search/physics?searchtype=author&query=Maiti%2C+R">Rishi Maiti</a>, <a href="/search/physics?searchtype=author&query=Carfano%2C+C">Caitlin Carfano</a>, <a href="/search/physics?searchtype=author&query=Ma%2C+Z">Zhizhen Ma</a>, <a href="/search/physics?searchtype=author&query=Tahersima%2C+M+H">Mohammad H. Tahersima</a>, <a href="/search/physics?searchtype=author&query=Lilach%2C+Y">Yigal Lilach</a>, <a href="/search/physics?searchtype=author&query=Ratnayake%2C+D">Dilan Ratnayake</a>, <a href="/search/physics?searchtype=author&query=Dalir%2C+H">Hamed Dalir</a>, <a href="/search/physics?searchtype=author&query=Sorger%2C+V+J">Volker J. Sorger</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1809.03544v1-abstract-short" style="display: inline;"> Electro-optic modulators transform electronic signals into the optical domain and are critical components in modern telecommunication networks, RF photonics, and emerging applications in quantum photonics and beam steering. All these applications require integrated and voltage-efficient modulator solutions with compact formfactors that are seamlessly integratable with Silicon photonics platforms a… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.03544v1-abstract-full').style.display = 'inline'; document.getElementById('1809.03544v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1809.03544v1-abstract-full" style="display: none;"> Electro-optic modulators transform electronic signals into the optical domain and are critical components in modern telecommunication networks, RF photonics, and emerging applications in quantum photonics and beam steering. All these applications require integrated and voltage-efficient modulator solutions with compact formfactors that are seamlessly integratable with Silicon photonics platforms and feature near-CMOS material processing synergies. However, existing integrated modulators are challenged to meet these requirements. Conversely, emerging electro-optic materials heterogeneously integrated with Si photonics open a new avenue for device engineering. Indium tin oxide (ITO) is one such compelling material for heterogeneous integration in Si exhibiting formidable electro-optic effect characterized by unity order index at telecommunication frequencies. Here we overcome these limitations and demonstrate a monolithically integrated ITO electro- optic modulator based on a Mach Zehnder interferometer (MZI) featuring a high-performance half-wave voltage and active device length product, VpL = 0.52 V-mm. We show, how that the unity-strong index change enables a 30 micrometer-short pi-phase shifter operating ITO in the index-dominated region away from the epsilon-bear-zero ENZ point. This device experimentally confirms electrical phase shifting in ITO enabling its use in multifaceted applications including dense on-chip communication networks, nonlinearity for activation functions in photonic neural networks, and phased array applications for LiDAR. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1809.03544v1-abstract-full').style.display = 'none'; document.getElementById('1809.03544v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 16 August, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> September 2018. </p> </li> <li class="arxiv-result"> <div class="is-marginless"> <p class="list-title is-inline-block"><a href="https://arxiv.org/abs/1801.06224">arXiv:1801.06224</a> <span> [<a href="https://arxiv.org/pdf/1801.06224">pdf</a>] </span> </p> <div class="tags is-inline-block"> <span class="tag is-small is-link tooltip is-tooltip-top" data-tooltip="Applied Physics">physics.app-ph</span> <span class="tag is-small is-grey tooltip is-tooltip-top" data-tooltip="Materials Science">cond-mat.mtrl-sci</span> </div> </div> <p class="title is-5 mathjax"> Towards a 2D Printer: A Deterministic Cross Contamination-free Transfer Method for Atomically Layered Materials </p> <p class="authors"> <span class="search-hit">Authors:</span> <a href="/search/physics?searchtype=author&query=Hemnani%2C+R+A">Rohit A. Hemnani</a>, <a href="/search/physics?searchtype=author&query=Carfano%2C+C">Caitlin Carfano</a>, <a href="/search/physics?searchtype=author&query=Tischler%2C+J+P">Jason P. Tischler</a>, <a href="/search/physics?searchtype=author&query=Tahersima%2C+M+H">Mohammad H. Tahersima</a>, <a href="/search/physics?searchtype=author&query=Maiti%2C+R">Rishi Maiti</a>, <a href="/search/physics?searchtype=author&query=Bartels%2C+L">Ludwig Bartels</a>, <a href="/search/physics?searchtype=author&query=Agarwal%2C+R">Ritesh Agarwal</a>, <a href="/search/physics?searchtype=author&query=Sorger%2C+V+J">Volker J. Sorger</a> </p> <p class="abstract mathjax"> <span class="has-text-black-bis has-text-weight-semibold">Abstract</span>: <span class="abstract-short has-text-grey-dark mathjax" id="1801.06224v1-abstract-short" style="display: inline;"> Precision and chip contamination-free placement of two-dimensional (2D) materials is expected to accelerate both the study of fundamental properties and novel device functionality. Current transfer methods of 2D materials onto an arbitrary substrate deploy wet chemistry and viscoelastic stamping. However, these methods produce a) significant cross contamination of the substrate due to the lack of… <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.06224v1-abstract-full').style.display = 'inline'; document.getElementById('1801.06224v1-abstract-short').style.display = 'none';">▽ More</a> </span> <span class="abstract-full has-text-grey-dark mathjax" id="1801.06224v1-abstract-full" style="display: none;"> Precision and chip contamination-free placement of two-dimensional (2D) materials is expected to accelerate both the study of fundamental properties and novel device functionality. Current transfer methods of 2D materials onto an arbitrary substrate deploy wet chemistry and viscoelastic stamping. However, these methods produce a) significant cross contamination of the substrate due to the lack of spatial selectivity b) may not be compatible with chemically sensitive device structures, and c) are challenged with respect to spatial alignment. Here, we demonstrate a novel method of transferring 2D materials resembling the functionality known from printing; utilizing a combination of a sharp micro-stamper and viscoelastic polymer, we show precise placement of individual 2D materials resulting in vanishing cross contamination to the substrate. Our 2D printer-method results show an aerial cross contamination improvement of two to three orders of magnitude relative to state-of-the-art dry and direct transfer methods. Moreover, we find that the 2D material quality is preserved in this transfer method. Testing this 2D material printer on taped-out integrated Silicon photonic chips, we find that the micro-stamper stamping transfer does not physically harm the underneath Silicon nanophotonic structures such as waveguides or micro-ring resonators receiving the 2D material. Such accurate and substrate-benign transfer method for 2D materials could be industrialized for rapid device prototyping due to its high time-reduction, accuracy, and contamination-free process. <a class="is-size-7" style="white-space: nowrap;" onclick="document.getElementById('1801.06224v1-abstract-full').style.display = 'none'; document.getElementById('1801.06224v1-abstract-short').style.display = 'inline';">△ Less</a> </span> </p> <p class="is-size-7"><span class="has-text-black-bis has-text-weight-semibold">Submitted</span> 18 January, 2018; <span class="has-text-black-bis has-text-weight-semibold">originally announced</span> January 2018. </p> </li> </ol> <div class="is-hidden-tablet">  <span class="help" style="display: inline-block;"><a href="https://github.com/arXiv/arxiv-search/releases">Search v0.5.6 released 2020-02-24</a>  </span> </div> </div> </main> <footer> <div class="columns is-desktop" role="navigation" aria-label="Secondary">  <div class="column"> <div 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