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Chip-scale integrated optical gyroscope based on a multi-mode co-detection technique

Photonics Research 2025年第2期13卷 319-329页

作者： SHUANG LIU JUNYI HU BINJIE LI BOYI XUE WENJIE WAN HUILIAN MA ZUYUAN HE School of Aeronautics and Astronautics Zhejiang UniversityHangzhou 310027China State Key Laboratory of Advanced Optical Communication Systems and Networks University of Michigan-Shanghai Jiao Tong University Joint InstituteShanghai Jiao Tong UniversityShanghai 200240China State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong UniversityShanghai 200240China

Gyroscopes are crucial components of inertial navigation systems,with ongoing development emphasizing miniaturization and enhanced *** recent advances in chip-scale optical gyroscopes utilizing integrated optics have attracted considerable attention,demonstrating significant advantages in achieving tactical-grade *** this paper,a new,to our knowledge,integrated optical gyroscope scheme based on the multi-mode co-detection technology is proposed,which takes the high-Q microcavity as its core sensitive element and uses the multi-mode characteristics of the microcavity to achieve the measurement of rotational angular *** detection scheme breaks the tradition of optical gyroscopes based on a single mode within the sensitive ring to detect the angular rotation rate,which not only greatly simplifies the optical and electrical system of the optical gyroscope,but also has a higher detection *** gyroscope based on this detection scheme has successfully detected the Earth's rotation on a 9.2 mm diameter microcavity with a bias instability as low as 1 deg/h,which is the best performance among the chip-scale integrated optical gyroscopes known to us.

关键词： enhanced accuracy miniaturization rotational angular velocity high q microcavity multi mode co detection integrated optical gyroscope integrated optics inertial navigation systemswith

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Dispersion Engineered C-band Parametric Oscillator Based on Silicon Concentric Microresonators

Dispersion Engineered C-band Parametric Oscillator Based on ...

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2024 Asia communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and optical communications, IPOC 2024

作者： Chang, Huajin Shen, Bitao Wang, Haoyu Wang, Yimeng Chen, Ruixuan He, Yandong Shu, Haowen Wang, Xingjun State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing China School of Integrated Circuits Peking University Beijing China

ISBN: (纸本)9798350379266

Integrated optical nonlinearities have spawned many new technologies such as optical parametric oscillators and microcombs. Despite remarkable achievements, optical parametric oscillation (OPO) and microcomb generation remain challenging for foundry-available silicon photonics. Silicon-photonic platform provides mature CMOS manufacturing process and relatively high nonlinear coefficient. However, the nonlinear absorption at near-infrared telecommunication band hinders the effective nonlinear response on silicon photonics. In addition, the 220 nm thick Si layer is unsuitable for anomalous dispersion waveguides, which is necessary for OPO process. In this work, a concentric microresonator with the PIN doping structure is designed to solve these two problems. Under reverse bias on the designed PIN structure, the generated free carriers are effectively migrated to weaken the free carrier absorption. Local anomalous dispersion is induced by the designed concentric structure. optical parametric oscillation is theoretically analyzed and 10 OPO sidebands are experimentally generated with a single pump. Our design verifies the ability of dispersion engineered nonlinear oscillators in C-band on foundry-available silicon photonic platform. © 2024 IEEE.

关键词： Silicon photonics

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Generation of 1.2 GHz, 40 fs pulses directly from a mode locked Yb:fiber laser

Generation of 1.2 GHz, 40 fs pulses directly from a mode loc...

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CLEO: Science and Innovations in CLEO 2024, CLEO: S and I 2024 - Part of Conference on Lasers and Electro-Optics

作者： Wang, Ya Yang, Ruoao Chen, Zhendong Pan, Duo Luo, Bin Zhang, Zhigang Chen, Jingbiao State Key Laboratory of Information Photonics and Optical Communications Beijing University of Posts and Telecommunications Beijing100876 China State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics Peking University Beijing100871 China

We demonstrated generation of 40 fs pulses from a 1.2 GHz repetition rate Yb:fiber laser at an average power up to 1.3 W. © Optica Publishing Group 2024

关键词： Fiber lasers

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PLC Splitter Encoded with Waveguide Bragg Grating by Femtosecond Laser Inscribing Technique for PON Monitoring

PLC Splitter Encoded with Waveguide Bragg Grating by Femtose...

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2023 Asia communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Hu, Jin Liu, Xu Ma, Lin Li, Heyuan He, Zuyuan State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Jiao Tong University Shanghai200240 China Zhejiang Lab Hangzhou311121 China

We demonstrate a PLC splitter encoded by Bragg waveguide gratings with a wavelength interval of 4 nm and an adjustable reflectance of up to 40% using a femtosecond laser inscribing technique for passive optical networ... 详细信息

ISBN: (纸本)9798350312614

关键词： Femtosecond laser optical network monitoring PLC splitter Waveguide Bragg Gratings

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Generation of 1.2 GHz, 40 fs pulses directly from a mode locked Yb:fiber laser

Generation of 1.2 GHz, 40 fs pulses directly from a mode loc...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

ISBN: (纸本)9781957171395

关键词： Fiber lasers

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Hierarchical Codebook Design Using Scale-Changeable Reconfigurable Holographic Surfaces in Near-Far Field communications

Hierarchical Codebook Design Using Scale-Changeable Reconfig...

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2024 IEEE Global communications Conference, GLOBECOM 2024

作者： Zhang, Shupei Di, Boya Zhang, Hongliang Poor, H. Vincent Peking University State Key Laboratory of Advanced Optical Communication Systems and Networks Beijing China Princeton University Department of Electrical and Computer Engineering Princeton United States

ISBN: (纸本)9798350351255

Reconfigurable holographic surfaces (RHSs) have been proposed as a cost-effective and power-efficient solution for extremely large-scale arrays, where the amplitude of electromagnetic waves radiated at each element is controlled to achieve high directive gain. However, the complexity of acquiring real-time channel state information (CSI) required for beamforming is prohibitively high, especially when the near-field expansion brought by the large-scale RHS is considered. In this paper, we propose a codebook-based beam training scheme for a large-scale RHS-enabled communication system to bypass CSI estimation. Unlike traditional phase-controlled arrays, the amplitude-controlled property of the RHS implies that each RHS element can be selectively activated. This motivates an array reconfiguration method where a scale-changeable RHS array is constructed to generate gain-flat beams with different coverage in the angle-range domain. A hierarchical RHS codebook is then proposed where the coverage of the codewords in each layer is progressively refined. To address the substantial beam search overhead in the near-far field, a two-stage beam training scheme is performed in the proposed codebook, thereby reducing the overhead to a logarithmic level of the element number. The simulation results show that the proposed scheme performs better than phased arrays given the same input power in terms of sum rate, and it also approaches the upper bound achieved by the exhaustive search at a significantly reduced overhead. © 2024 IEEE.

关键词： Antenna phased arrays

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Validating the First-Order Topological Charge of Vortex Smith-Purcell Radiation 15

Validating the First-Order Topological Charge of Vortex Smit...

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15th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2023

作者： Zhang, Zi-Wen Du, Chao-Hai Lei, Yu-Lu Zhu, Juan-Feng Zhu, Yu Li, Fan-Hong Shi-Pan Peking University Center for Carbon-Based Electronics State Key Laboratory of Advanced Optical Communication Systems and Networks School of Electronics China

ISBN: (纸本)9798350338874

The vortex Smith-Purcell radiation with topological charge (TC) of 0 and -2 is proposed based on spoof surface plasmons (SSPs) carrying orbital angular momentums (OAMs) in this work. Due to the chirality of the helical grating, their eigenmodes are a series of SSPs carrying OAMs concerning the harmonic order. By customizing the slot depths over two propagation periods, these SSPs are exposed to the light cone. When the swift electrons skim over the grating and the wavenumber-matching conditions are met between the electron and SSPs carry ±1h, the vortex beams with TCs = 0 and -2 are emitted into the free space with broadband tunability. The proposed method and validation may prompt the development of mode-division multiplexed communications and chiral detections based on vortex beams. © 2023 IEEE.

关键词： Vortex flow

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Broadband Arbitrary Coupler Based on Asymmetric Mach-Zehnder Interferometers with Bezier Curves

Broadband Arbitrary Coupler Based on Asymmetric Mach-Zehnder...

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2023 Asia communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings, ACP/POEM 2023

作者： Chen, Jiaqi Liu, Yuanbin Ni, Ziheng Lu, Liangjun Chen, Jianping Zhou, Linjie Shanghai Jiao Tong University State Key Laboratory of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai China

We propose a broadband coupler based on cascaded Mach-Zehnder interferometers with Bezier curves on the silicon nitride platform, which has a wide operation wavelength range of 110 nm and good width/thickness fabricat... 详细信息

ISBN: (纸本)9798350312614

关键词： Bezier curve broadband coupler silicon nitride

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Influence of thermal effects on atomic Bloch oscillation

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Frontiers of physics 2024年第6期19卷 269-277页

作者： Guoling Yin Chi-Kin Lai Nana Chang Yi Liang Dekai Mao Xiaoji Zhou State Key Laboratory of Quantum Optics and Quantum Optics Devices Institute of Opto-ElectronicsShanxi UniversityTaiyuan 030006China State Key Laboratory of Advanced Optical Communication Systems and Networks School of ElectronicsPeking UniversityBeijing 100871China Institute of Carbon-based Thin Film Electronics Peking UniversityTaiyuan 030012China

Advancements in the experimental toolbox of cold atoms have enabled the meticulous control of atomic Bloch oscillation(BO)within optical lattices,thereby enhancing the capabilities of gravity *** work delves into the impact of thermal effects on Bloch oscillation in 1D accelerated optical lattices aligned with gravity by varying the system's initial temperature,Through the application of Raman cooling,we effec-tively reduce the longitudinal thermal effect,stabilizing the longitudinal coherence length over the timescale of its *** atomic losses over multiple Bloch periods are measured,which are primarily attributed to transverse ***,we identify two distinct inverse scaling behaviors in the oscillation lifetime scaled by the corresponding density with respect to temperatures,implying diverse equilibrium processes within or outside the Bose-Einstein condensate(BEC)*** compe-tition between the system's coherence and atomic density leads to a rela-tively smooth variation in the actual lifetime versus *** find-ings provide valuable insights into the interaction between thermal effects and BO,offering avenues for the refinement of quantum measurement technologies.

关键词： Bloch oscillation optical lattice thermal effects cold atoms Raman cooling

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Beam-scanning Antenna with High Chirality

Beam-scanning Antenna with High Chirality

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2023 Cross Strait Radio Science and Wireless Technology Conference, CSRSWTC 2023

作者： Lei, Yu-Lu Zhang, Yue-Yi Zhang, Zi-Wen Du, Chao-Hai Center for Carbon-based Electronics Networks School of Electronics State Key Laboratory of Advanced Optical Communication Systems Peking University China

ISBN: (纸本)9798350358971

Chirality finds applications in various fields such as communication, sensing, and detection. However, existing methods have limitations in generating highly circular polarized radiation. In this study, we have introduced a novel approach to achieve highly circularly polarized radiation. Based on the spin momentum locking property of the spoof surface plasmon polaritons, a set of cylinders is introduced to facilitate the coupling of the strongly confined surface wave into radiation. This radiation carries spin angular momentum, which aligns with the transverse spin angular momentum, resulting in circular polarization. The proposed structure also enables beam scanning functionality, which is experimentally validated through the fabrication of an antenna. Overall, our scheme holds promise for generating highly circularly polarized radiation with applications in a wide range of fields. © 2023 IEEE.

关键词： chirality spin angular momentum spin momentum locking surface plasmon polaritons

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