A large-scale microelectromechanical-systems-based silicon photonics LiDAR

Nature, Journal Year: 2022, Volume and Issue: 603(7900), P. 253 - 258

Published: March 9, 2022

Abstract Three-dimensional (3D) imaging sensors allow machines to perceive, map and interact with the surrounding world 1 . The size of light detection ranging (LiDAR) devices is often limited by mechanical scanners. Focal plane array-based 3D are promising candidates for solid-state LiDARs because they electronic scanning without moving parts. However, their resolutions have been 512 pixels or smaller 2 In this paper, we report on a 16,384-pixel LiDAR wide field view (FoV, 70° × 70°), fine addressing resolution (0.6° 0.6°), narrow beam divergence (0.050° 0.049°) random-access sub-MHz operation speed. 128 128-element focal switch array (FPSA) grating antennas microelectromechanical systems (MEMS)-actuated optical switches monolithically integrated 10 11-mm silicon photonic chip, where 96 subarray wire bonded tested in experiments. distance 1.7 cm achieved frequency-modulated continuous-wave (FMCW) monostatic configuration. FPSA can be mass-produced complementary metal–oxide–semiconductor (CMOS) foundries, which will ubiquitous use autonomous cars, drones, robots smartphones.

Language: Английский

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Roadmapping the next generation of silicon photonics

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: Jan. 25, 2024

Abstract Silicon photonics has developed into a mainstream technology driven by advances in optical communications. The current generation led to proliferation of integrated photonic devices from thousands millions-mainly the form communication transceivers for data centers. Products many exciting applications, such as sensing and computing, are around corner. What will it take increase silicon millions billions units shipped? next look like? common threads integration fabrication bottlenecks that applications face, which emerging technologies can solve them? This perspective article is an attempt answer questions. We chart generational trends technology, drawing parallels definitions CMOS technology. identify crucial challenges must be solved make giant strides CMOS-foundry-compatible devices, circuits, integration, packaging. critical systems applications—in communication, signal processing, sensing. By identifying summarizing opportunities, we aim stimulate further research on ecosystem.

Language: Английский

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Quantum-dot-based deterministic photon–emitter interfaces for scalable photonic quantum technology

Nature Nanotechnology, Journal Year: 2021, Volume and Issue: 16(12), P. 1308 - 1317

Published: Oct. 18, 2021

Language: Английский

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Scalable reservoir computing on coherent linear photonic processor

Communications Physics, Journal Year: 2021, Volume and Issue: 4(1)

Published: Feb. 10, 2021

Abstract Photonic neuromorphic computing is of particular interest due to its significant potential for ultrahigh speed and energy efficiency. The advantage photonic hardware lies in ultrawide bandwidth parallel processing utilizing inherent parallelism. Here, we demonstrate a scalable on-chip implementation simplified recurrent neural network, called reservoir computer, using an integrated coherent linear processor. In contrast previous approaches, both the input weights are encoded spatiotemporal domain by processing, which enables ultrafast beyond electrical bandwidth. As device can process multiple wavelength inputs over telecom C-band simultaneously, use optical (~5 terahertz) as computational resource. Experiments standard benchmarks showed good performance chaotic time-series forecasting image classification. considered be able perform 21.12 tera multiplication–accumulation operations per second (MAC ∙ s −1 ) each reach petascale computation on single chip division multiplexing. Our results challenging conventional Turing–von Neumann machines, they confirm great towards peta-scale super-computing chip.

Language: Английский

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Silicon photonics for high-capacity data communications

Photonics Research, Journal Year: 2022, Volume and Issue: 10(9), P. A106 - A106

Published: June 3, 2022

In recent years, optical modulators, photodetectors, (de)multiplexers, and heterogeneously integrated lasers based on silicon platforms have been verified. The performance of some devices even surpasses the traditional III-V photonic circuit (PIC) platforms, laying foundation for large-scale integration. Silicon technology can overcome limitations transceiver in high-speed transmission networks to support faster interconnection between data centers. this article, we will review progress PICs. first part gives an overview achievements second introduces building blocks, including low-loss waveguides, passive devices, lasers, so on. third part, high-capacity transceivers is discussed. fourth give a chip.

Language: Английский

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Reconfigurable photonics with on-chip single-photon detectors

Nature Communications, Journal Year: 2021, Volume and Issue: 12(1)

Published: March 3, 2021

Abstract Integrated quantum photonics offers a promising path to scale up optics experiments by miniaturizing and stabilizing complex laboratory setups. Central elements of integrated are emitters, memories, detectors, reconfigurable photonic circuits. In particular, detectors not only offer optical readout but, when interfaced with circuits, allow feedback adaptive control, crucial for deterministic teleportation, training neural networks, stabilization However, the heat generated thermally is incompatible heat-sensitive superconducting single-photon thus their on-chip co-integration remains elusive. Here we show low-power microelectromechanical reconfiguration circuits on same chip. We demonstrate three key functionalities technologies: 28 dB high-extinction routing classical light, 90 high-dynamic range detection, excitation over 12 power variation. Our platform enables heat-load free linear critical state preparation logic in large-scale applications.

Language: Английский

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Integrated silicon photonic MEMS

Microsystems & Nanoengineering, Journal Year: 2023, Volume and Issue: 9(1)

Published: March 20, 2023

Abstract Silicon photonics has emerged as a mature technology that is expected to play key role in critical emerging applications, including very high data rate optical communications, distance sensing for autonomous vehicles, photonic-accelerated computing, and quantum information processing. The success of silicon been enabled by the unique combination performance, yield, high-volume capacity can only be achieved standardizing manufacturing technology. Today, standardized platforms implemented foundries provide access optimized library components, low-loss routing, fast modulation, continuous tuning, high-speed germanium photodiodes, high-efficiency electrical interfaces. However, silicon’s relatively weak electro-optic effects result modulators with significant footprint thermo-optic tuning devices require power consumption, which are substantial impediments large-scale integration photonics. Microelectromechanical systems (MEMS) enhance building blocks compact, low-loss, broadband, low consumption. Here, we introduce photonic MEMS platform consisting high-performance nano-opto-electromechanical fully integrated alongside standard foundry wafer-level sealing long-term reliability, flip-chip bonding redistribution interposers, fibre-array attachment port count interfacing. Our experimental demonstration fundamental circuit elements, couplers, phase shifters wavelength-division multiplexing using lifts previous enable scaling large circuits applications telecommunications, neuromorphic sensing, programmable photonics, computing.

Language: Английский

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20-Mode Universal Quantum Photonic Processor

Quantum, Journal Year: 2023, Volume and Issue: 7, P. 1071 - 1071

Published: Aug. 1, 2023

Integrated photonics is an essential technology for optical quantum computing. Universal, phase-stable, reconfigurable multimode interferometers (quantum photonic processors) enable manipulation of states and are one the main components computers in various architectures. In this paper, we report realization largest processor to date. The enables arbitrary unitary transformations on its 20 input modes with amplitude fidelity FHaar=97.4% class="MJX-TeXAtom-ORD">Perm=99.5VHOM=98%. realized xmlns:mml="http://www.w3.org/1998/Math/MathML">Si3N4 waveguides actively cooled by a Peltier element.

Language: Английский

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Versatile parallel signal processing with a scalable silicon photonic chip

Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)

Published: Jan. 2, 2025

Silicon photonic signal processors promise a new generation of processing hardware with significant advancements in bandwidth, low power consumption, and minimal latency. Programmable silicon processors, facilitated by tuning elements, can reduce development cycles costs. However, traditional programmable based on optical switches face scalability performance challenges due to control complexity transmission losses. Here, we propose scalable parallel processor for versatile applications interleaving wavelength temporal dimensions. Additionally, it incorporates ultra-low-loss waveguides low-phase-error switch techniques, achieving an overall insertion loss 10 dB. This design offers loss, high scalability, simplified control, enabling advanced functionalities such as accurate microwave reception, narrowband filtering, wide-bandwidth arbitrary waveform generation, high-speed computing without the need elements calibration. Our demonstrates advantages both scale performance, marking advancement large-scale, high-performance, multifunctional systems. work presents leveraging With switches, be programmed enable functions, showcasing great

Language: Английский

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MEMS for Photonic Integrated Circuits

IEEE Journal of Selected Topics in Quantum Electronics, Journal Year: 2019, Volume and Issue: 26(2), P. 1 - 16

Published: Sept. 24, 2019

The field of microelectromechanical Systems (MEMS) for photonic integrated circuits (PICs) is reviewed. This leverages mechanics at the nanometer to micrometer scale improve existing components and introduce novel functionalities in PICs. review covers MEMS actuation principles mechanical tuning mechanisms photonics. state art tunable PICs quantitatively reviewed critically assessed with respect suitability large-scale integration PIC technology platforms. provide a powerful approach overcome current limitations technologies enable new design dimension wide range applications.

Language: Английский

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