1.5k citations · 3.3k across the 49 of their papers we have counts for
51 papers
Digitally Programmable Photochromic Hydrogel Contact Lenses as Light-Adaptive Artificial Irises
Asad Nauman, Tristen Moncada, Guli Gulinihali +3
Excessive exposure to ultraviolet (UV) radiation is associated with a range of ocular pathologies, motivating the development of soft optical devices that can dynamically regulate…
Dispersion Control in Micromechanical Evanescent Optical Modulators
Karl Johnson, John Hong, Tallis Chang +8
Efficient, low-loss, and versatile optical modulators are a critical ingredient for practical integrated photonic systems. Modulators based on micro-electromechanical systems (MEMS…
Scaling Routers with In-Package Optics and High-Bandwidth Memories
Isaac Keslassy, Ilay Yavlovich, Jose Yallouz +3
This paper aims to apply two major scaling transformations from the computing packaging industry to internet routers: the heterogeneous integration of high-bandwidth memories (HBMs…
Panel-Scale Reconfigurable Photonic Interconnects for Scalable AI Computation
Tzu-Chien Hsueh, Bill Lin, Zijun Chen +1
Panel-scale reconfigurable photonic interconnects on a glass substrate up to 500-mm x 500-mm or larger are envisioned by proposing a novel photonic switch fabric that enables all d…
Polarization-Sensitive Diffractive Optics and Metasurfaces: "Past is Prologue"
Noah A. Rubin, Yeshaiahu Fainman
Polarization control and switchability are among the most unique features of "metasurfaces" as compared with diffractive optics technologies of the past. Here, we review how the po…
Interferometric modal splitting enables a broadband, dual-polarization on-chip spectrometer
Karl Johnson, Vladimir Fedorov, Dmitrii Belogolovskii +3
The modal dispersion of waveguides often limits integrated photonic devices to operation with a single polarization state. This presents a challenge for sensing and spectroscopy ap…
Large Bidirectional Refractive Index Change in Silicon-rich Nitride via Visible Light Trimming
Dmitrii Belogolovskii, Md Masudur Rahman, Karl Johnson +6
Phase-sensitive integrated photonic devices are highly susceptible to minor manufacturing deviations, resulting in significant performance inconsistencies. This variability has lim…
Electrically Reconfigurable Non-Volatile On-Chip Bragg Filter with Multilevel Operation
Amged Alquliah, Jay Ke-Chieh Sun, Christopher Mekhiel +4
Photonic integrated circuits (PICs) demand tailored spectral responses for various applications. On-chip Bragg filters offer a promising solution, yet their static nature hampers s…
Micro-Ring Modulator Linearity Enhancement for Analog and Digital Optical Links
Sumilak Chaudhury, Karl Johnson, Chengkuan Gao +3
An energy/area-efficient low-cost broadband linearity enhancement technique for electro-optic micro-ring modulators (MRM) is proposed to achieve 6.1-dB dynamic linearity improvemen…
Coincidence detection for photon triplet sources
Zijun Chen, Yeshaiahu Fainman
Photon triplet generation based on third-order spontaneous parametric down-conversion remains as an experimental challenge. The challenge stems from the trade-offs between source b…
Information Processing in Hybrid Photonic Electrical Reservoir Computing
Prabhav Gaur, Chengkuan Gao, Karl Johnson +3
Physical Reservoir Computing (PRC) is a recently developed variant of Neuromorphic Computing, where a pertinent physical system effectively projects information encoded in the inpu…
Monolithic Silicon-Photonics Linear-Algebra Accelerators Enabling Next-Gen Massive MIMO
Tzu-Chien Hsueh, Yeshaiahu Fainman, Bill Lin
A system-on-chip (SoC) photonic-electronic linear-algebra accelerator with the features of wavelength-division-multiplexing (WDM) based broadband photodetections and high-dimension…
ChatGPT at the Speed of Light: Optical Comb-Based Monolithic Photonic-Electronic Linear-Algebra Accelerators
Tzu-Chien Hsueh, Yeshaiahu Fainman, Bill Lin
This paper proposes to adopt advanced monolithic silicon-photonics integrated-circuits manufacturing capabilities to achieve a system-on-chip photonic-electronic linear-algebra acc…
A systematic evaluation of Silicon-rich Nitride Electro-optic Modulator design and tradeoffs
Alex Friedman, Dmitrii Belogolovskii, Andrew Grieco +1
We present a study of linearized \c{hi}^((3)) based electro-optic modulation beginning with an analysis of the nonlinear polarizability, and how to linearize a modulator based on t…
Multirate Spectral Domain Optical Coherence Tomography
Prabhav Gaur, Andrew Grieco, Yeshaiahu Fainman
Optical coherence tomography is state-of-the-art in non-invasive imaging of biological structures. Spectral Domain Optical Co-herence Tomography is the popularly used variation of…
Optofluidic memory and self-induced nonlinear optical phase change for reservoir computing in silicon photonics
Chengkuan Gao, Prabhav Gaur, Dhaifallah Almutairi +2
Implementing optical-based memory and utilizing it for computation on the nanoscale remains an attractive but still a challenging task. While significant progress was achieved in n…
Realization of a wide steering end-fire facet optical phased array using silicon rich silicon nitride
Hani Nejadriahi, Prabhav Gaur, Karl Johnson +3
The design, fabrication, and characterization of a 16-element optical phased array (OPA) using a high index (n = 3.1) silicon rich silicon nitride (SRN) is demonstrated. We present…
Quantum materials for energy-efficient neuromorphic computing
Axel Hoffmann, Shriram Ramanathan, Julie Grollier +16
Neuromorphic computing approaches become increasingly important as we address future needs for efficiently processing massive amounts of data. The unique attributes of quantum mate…
Thin liquid film as an optical nonlinear-nonlocal medium and memory element in integrated optofluidic reservoir computer
Chengkuan Gao, Prabhav Gaur, Shimon Rubin +1
Understanding light-matter interaction enables harnessing physical effects to translate into new capabilities realized in modern integrated photonics platforms. Here, we present th…
Demonstration of the DC-Kerr Effect in Silicon-Rich Nitride
Alex Friedman, Hani Nejadriahi, Rajat Sharma +1
We demonstrate the DC-Kerr effect in PECVD Silicon-rich Nitride (SRN) and use it to demonstrate a third order nonlinear susceptibility, \c{hi}^((3)), as high as (6 +/- 0.58)x10-19…
Effects of High- on Phase-locking Stability and Tunability in Laterally Coupled Lasers
Sizhu Jiang, Suruj S. Deka, Si Hui Pan +1
Phase-locked laser arrays have been extensively investigated in terms of their stability and nonlinear dynamics. Specifically, enhancing the phase-locking stability allows laser ar…
Efficient and compact thermo-optic phase shifter in silicon-rich silicon nitride
Hani Nejadriahi, Steve Pappert, Yeshaiahu Fainman +1
The design, fabrication, and characterization of low loss ultra-compact bends in high index (n = 3.1 at λ = 1550 nm) PECVD silicon rich silicon nitride (SRN) is demonstrated and ut…
The effect of DNA bases permutation on surface enhanced Raman scattering spectrum
Shimon Rubin, Phuong H. L. Nguyen, Yeshaiahu Fainman
Surface enhanced Raman scattering (SERS) process results in a tremendous increase of Raman scattering cross section of molecules adsorbed to plasmonic metals and influenced by nume…
Thermo-Optic Properties of Silicon-Rich Silicon Nitride for On-chip Applications
Hani Nejadriahi, Alex Friedman, Rajat Sharma +3
We demonstrate the thermo-optic properties of silicon-rich silicon nitride (SRN) films deposited using plasma-enhanced chemical vapor deposition (PECVD). Shifts in the spectral res…