A5069836185- Photonic and Optical Devices
- Optical Network Technologies
- Advanced Photonic Communication Systems
- Semiconductor Lasers and Optical Devices
- Advanced Fiber Laser Technologies
- Advanced Fiber Optic Sensors
- Quantum, superfluid, helium dynamics
- Neural Networks and Reservoir Computing
- Geophysics and Sensor Technology
- Atomic and Subatomic Physics Research
- Mechanical and Optical Resonators
- Advanced Optical Network Technologies
- Literature, Film, and Journalism Analysis
- Cold Atom Physics and Bose-Einstein Condensates
- Molecular Junctions and Nanostructures
- PAPR reduction in OFDM
- Methane Hydrates and Related Phenomena
- Magneto-Optical Properties and Applications
- Photonic Crystals and Applications
- Plasmonic and Surface Plasmon Research
Photonics (United States)
2022-2024
Columbia University
2015-2021
Bangor University
2020
Institute of Electrical and Electronics Engineers
2019
National Institute of Standards and Technology
2016
We report on the first monolithically integrated microring-based optical switch in switch-and-select architecture.The fabric delivers strictly non-blocking connectivity while completely canceling firstorder crosstalk.The 4×4 switching circuit consists of eight silicon spatial (de-)multiplexers interconnected by a Si/SiN dual-layer crossing-free central shuffle.Analysis on-state and off-state power transfer functions reveals extinction ratios individual ring resonators exceeding 25 dB,...
High-performance systems are increasingly bottlenecked by the growing energy and communications costs of interconnecting numerous compute memory resources. Recent advances in integrated silicon photonics offer opportunity embedding optical connectivity that directly delivers high off-chip communication bandwidth densities with low power consumption. This paper reviews design integration photonic interconnection networks address data-movement challenges high-performance systems. Beyond...
We propose and analyze a scalable microring-based Clos switch fabric architecture constructed with switch-and-select switching stages. A silicon 4 × building block that was designed fabricated through American Institute for Manufacturing Integrated Photonics is used the proof-of-principle demonstration of 16 fabric. By fully blocking first-order crosstalk, device measured to show crosstalk ratio in range -57 -48.5 dB, enabling better than -39 dB switch. Our study shows three-stage design...
Widespread adoption of silicon photonics into datacenters requires that the integration driving electronics with be an essential component transceiver development. In this article, we describe our photonic design: a 2.5D integrated multi-chip module (MCM) for 4-channel wavelength division multiplexed (WDM) microdisk modulation targeting 10 Gbps per channel. A interposer is used to provide connectivity between circuit (PIC) and commercial transimpedance amplifiers (TIAs). Error free...
Unprecedented levels of device connectivity and the emergence futuristic digital services are driving fundamental changes to underlying fixed wireless data transport networks. Projected bandwidth requirements, coupled with increased network centralization virtualization, will lead convergence data-center, systems, a greater onus being placed on optical routing/transport portion these Such converged networks require development technologies capable servicing multitude user types. In this...
Disaggregation enabled by silicon photonic switch fabrics is a path to low-cost and energy-efficient data centers. The routing strategy, which can be seamlessly incorporated into the control plane, potentially provides an additional dimension for physical-layer performance optimization, at no extra cost. In this paper, we analyze role of optical strategies fabrics. We define quantify number global switching states in various topologies discuss their relationship permutations. propose...
We review the motivation, goals, and achievements of Photonic Integrated Networked Energy efficient datacenter (PINE) project, which is part Advanced Research Projects Agency–Energy (ARPA-E) ENergy-efficient Light-wave Technology Enabling Networks that Enhance Dataprocessing (ENLITENED) program. The PINE program leverages unique features photonic technologies to enable alternative mega-datacenters high-performance computing (HPC) system architectures deliver more substantial energy...
NASA is working with US industry and academia to develop Photonic Integrated Circuits (PICs) for: (1) Sensors (2) Analog RF applications (3) Computing free space communications. The PICs provide reduced size, weight, power that critical for space-based systems. We describe recent breakthrough 3D monolithic integration of photonic structures, particularly high-speed graphene-silicon devices on CMOS electronics create CMOS-compatible highbandwidth transceivers ultra-low Terabit-scale optical...
Recent breakthroughs in silicon photonics technology may soon lead to mass-producible chip-scale tactical-grade (or better) gyroscopes by using a CMOS-compatible fabrication process print highly integrated high-sensitivity optical gyroscopes. This paper reports our progress on designing and building an gyro out of SiN racetrack resonator 37-mm perimeter with 1270 finesse (10<sup>8</sup> intrinsic quality factor) off-the-shelf fiber components (circulators, splitters, modulators)...
A programmable control system for wavelength locking WDM channels on microring arrays is used to demonstrate arbitrary demultiplexing and selection of fast switchable wavelengths. Successful data measurements verify the functionality within an interconnection network implementation.
Highly accurate calibration and characterization process for optical switch fabrics without built-in power monitors is first proposed, substantially reducing cost complexity device integration packaging. The multi-input scheme ensures method's scalability, which we demonstrate experimentally with automated implementation.
We present the architecture and assembly of a compact, 3D-integrated CMOS-silicon photonic transceiver for DWDM interconnects. The interleaves 64 parallel wavelength channels enabling energy efficient scaling multi-Tbps/mm 2 bandwidth densities future co-packaged chipsets.
We present the first strictly non-blocking optical switch in switch-and-select topology using microring resonators. The 4×4-port device incorporates thermally-actuated silicon microrings and Si/SiN two-layered central shuffle network, exhibiting on-chip loss crosstalk ratio as low 1.8dB -50dB, respectively.
Research efforts ranging from studies of solid helium to searches for a neutron electric dipole moment require isotopically purified with ratio 3He 4He at levels below that which can be measured using traditional mass spectroscopy techniques. We demonstrate an approach such measurement accelerator spectroscopy, reaching the 10e-14 level sensitivity, several orders magnitude more sensitive than other Measurements 3He/4He in samples relevant lifetime indicate need substantial corrections. also...
We demonstrate a novel differential phase-shift-keying (DPSK) demodulator based on coherent perfect absorption (CPA). Our DPSK chip device, which incorporates silicon ring resonator, two bus waveguide inputs, and monolithically integrated detectors, operates passively at bit rate of 10 Gbps telecommunication wavelengths, fits within mm-scale footprint. Critical coupling is used to achieve efficient CPA by tuning the gap between waveguides. The device has vertical eye opening 12.47 mV quality...
Highly linear integrated optical modulators are required in order to provide a distribution platform for analog Radio-over-Fiber (RoF) signals. The work outlined examines the performance of multiple bands Generalized Frequency Division Multiplexed (GFDM) signals photonic link employing differential drive silicon Mach-Zehnder Modulator (MZM). Performance is evaluated terms received Bit Error Rate (BER) and Vector Magnitude (EVM). In an back-to-back scenario, 3.3% EVM achieved case where three...
This paper describes the progress made in developing a resonant optical gyroscope fabricated with silicon-nitride (SiN) waveguide using CMOS-compatible processes. The ultra-low loss of SiN waveguides allows ring resonators to be small footprints (~1 cm<sup>2</sup>) while achieving higher Q-factors (~10<sup>8</sup>) than similar from other materials. For this reason, is very promising platform for miniaturized tactical-grade specifications, which require an angular random walk (ARW) 0.05...
Advancements in silicon photonics technology have resulted significant progress toward tactical-grade chip-scale optical gyroscopes for applications such as inertial navigation a range of self-driving vehicles. Our first generation gyro, reported year ago, was resonant ring gyro fabricated with an ultra-low-loss silicon-nitride waveguide racetrack shape perimeter 37 mm and finesse 1270. When the laser frequency tuned to interrogate resonance lowest backscattering coefficient, balanced...
High bandwidth density silicon photonic interconnects offer the potential to address massive increase in demands for data center traffic and high performance computing. One of major challenges realizing photonics transceivers is integration packing ICs (PIC) with electronic (EIC). This paper presents our version one, 2.5D integrated multi-chip module (MCM) transceiver 4 channel wavelength division multiplexing (WDM) operation, targeting 10 Gbps per channel. We identify five key areas...
We demonstrate the first 2.5D integrated, wavelength division multiplexing, silicon photonic receiver. The multi-chip module utilizes a interposer to integrate four-channel cascaded microdisk receiver with four electronic transimpedance amplifiers.
The intermodulation crosstalk of graphene modulators integrated on silicon nitride is experimentally characterized for the first time 1 Gb/s signals. We show that 25 GHz channel spacings are supported with <; 0.1 dB penalty DWDM applications.
We develop a novel optical deserialization system in silicon photonics to reduce electrical power consumption and improve receiver sensitivity. Results demonstrate path increasing sensitivity by 2.5 dB with improved modulators.