193 citations · 715 across the 18 of their papers we have counts for
19 papers
Fabrication-Aware Inverse Design For Shape Optimization
Shaheer Khan, Mustafa Hammood, Nicolas A. F. Jaeger +1
Inverse design (ID) is a computational method that systematically explores a design space to find optimal device geometries based on specific performance criteria. In silicon photo…
120 GOPS Photonic Tensor Core in Thin-film Lithium Niobate for Inference and in-situ Training
Zhongjin Lin, Bhavin J. Shastri, Shangxuan Yu +27
Photonics offers a transformative approach to artificial intelligence (AI) and neuromorphic computing by enabling low-latency, high-speed, and energy-efficient computations. Howeve…
Cryogenic Optical Packaging Using Photonic Wire Bonds
Becky Lin, Donald Witt, Jeff F. Young +1
We present the required techniques for the successful low loss packaging of integrated photonic devices capable of operating down to 970 mK utilizing photonic wire bonds. This scal…
Reinforcement Learning for Photonic Component Design
Donald Witt, Jeff Young, Lukas Chrostowski
We present a new fab-in-the-loop reinforcement learning algorithm for the design of nano-photonic components that accounts for the imperfections present in nanofabrication processe…
Roadmapping the Next Generation of Silicon Photonics
Sudip Shekhar, Wim Bogaerts, Lukas Chrostowski +4
Silicon photonics has developed into a mainstream technology driven by advances in optical communications. The current generation has led to a proliferation of integrated photonic…
Monolithically integrated 940 nm half VCSELs on bulk Ge substrates
Yunlong Zhao, Jia Guo, Markus Feifel +7
High quality n-type AlGaAs distributed Bragg reflectors (DBRs) and lnGaAs multiple quantum wells were successfully monolithically grown on 4-inch off-cut Ge (100) wafers. The grown…
Study of monolithically integrated 940 nm AlGaAs distributed Bragg reflectors on graded GaAsP/bulk Si substrates
Jia Guo, Yunlong Zhao, Markus Feifel +7
We report the fabrication of monolithically integrated 940 nm AlGaAs distributed Bragg reflectors (DBRs) on graded GaAsP/Si substrates. Low-density surface bumps and cross-hatch pa…
Enhanced Polling and Infiltration for Highly-Efficient Electro-Optic Polymer-Based Mach-Zehnder Modulators
Iman Taghavi, Razi Dehghannasiri, Tianren Fan +7
An ultra-narrow slot waveguide is fabricated for use in highly-efficient, electro-optic-polymer-based, integrated-optic modulators. Measurement results indicate that 's below…
Monolithic integration of 940 nm AlGaAs distributed Bragg reflectors on bulk Ge substrates
Yunlong Zhao, Jia Guo, Markus Feifel +8
High quality 940 nm AlGaAs n-type distributed Bragg reflectors (DBRs) were successfully monolithically grown on off-cut Ge (100) substrates. The Ge-DBRs have reflectivi…
Prospects and applications of photonic neural networks
Chaoran Huang, Volker J. Sorger, Mario Miscuglio +13
Neural networks have enabled applications in artificial intelligence through machine learning, and neuromorphic computing. Software implementations of neural networks on convention…
Photoconductive Heaters Enable Control of Large-Scale Silicon Photonic Ring Resonator Circuits
Hasitha Jayatilleka, Hossam Shoman, Lukas Chrostowski +1
A multitude of large-scale silicon photonic systems based on ring resonators have been envisioned for applications ranging from biomedical sensing to quantum computing and machine…
Controlling evanescent waves using silicon photonic all-dielectric metamaterials for dense integration
Saman Jahani, Sangsik Kim, Jonathan Atkinson +11
Ultra-compact, densely integrated optical components manufactured on a CMOS-foundry platform are highly desirable for optical information processing and electronic-photonic co-inte…
Stress engineering with silicon nitride stressors for Ge-on-Si lasers
Jiaxin Ke, Lukas Chrostowski, Guangrui Xia
Side and top silicon nitride stressors were proposed and shown to be effective ways to reduce the threshold current Ith and improve the wall-plug efficiency ηwp of Ge-on-Si lasers.…
Significant crosstalk reduction using all-dielectric CMOS-compatible metamaterials
Amin Khavasi, Lukas Chrostowski, Zeqin Lu +1
A recent computational result suggests that highly confined modes can be realized by all-dielectric metamaterials (S. Jahani et. al., Optica 1, 96 (2014)). This substantially decre…
Automatic Wavelength Tuning of Series-Coupled Vernier Racetrack Resonators on SOI
Hasitha Jayatilleka, Robert Boeck, Kyle Murray +4
Using in-resonator photoconductive heaters to both sense and control the intra-cavity light intensity of microring resonators, automatic tuning of a silicon-on-insulator two-ring V…
Monolithic Integration of AlGaAs Distributed Bragg Reflectors on Virtual Ge Substrates via Aspect Ratio Trapping
Yiheng Lin, Wei Shi, Jizhong Li +8
High quality AlxGa1-xAs distributed Bragg reflectors (DBRs) were successfully monolithically grown on on-axis Si (100) substrates via a Ge layer formed by aspect ratio trapping (AR…
Design Considerations of Biaxially Tensile-Strained Germanium-on-Silicon Lasers
Xiyue Li, Zhiqiang Li, Simon Li +2
Physical models of Ge energy band structure and material loss were implemented in LASTIP(TM), a 2D simulation tool for edge emitting laser diodes. The model calculation is able to…
Wavelength tuning and stabilization of microring-based filters using silicon in-resonator photoconductive heaters
Hasitha Jayatilleka, Kyle Murray, Miguel Angel Guillen-Torres +5
We demonstrate that n-doped resistive heaters in silicon waveguides show photoconductive effects with high responsivities. These photoconductive heaters, integrated into microring…
Design and modeling of a transistor vertical-cavity surface-emitting laser
Wei Shi, Behnam Faraji, Mark Greenberg +7
A multiple quantum well (MQW) transistor vertical-cavity surface-emitting laser (T-VCSEL) is designed and numerically modeled. The important physical models and parameters are disc…