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CLEO: Applications and Technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

作者： Liu, Chuxin Li, Xinhang Guo, Yuyao Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate a hybrid-integrated self-injection-locked laser on the Si3N4-on-SOI platform to generate FMCW signal with 9 kHz linewidth, 2 MHz repetition rate, and high linearity, supporting FMCW-LiDAR with refresh r... 详细信息

ISBN: (纸本)9781957171395

关键词： Linewidth

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Amplitude-Invariant Phase Shifter Based on Carrier-Injection Mechanism for optical Phased Array

Amplitude-Invariant Phase Shifter Based on Carrier-Injection...

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CLEO: Applications and Technology in CLEO 2024, CLEO: A and T 2024 - Part of Conference on Lasers and Electro-Optics

作者： Yuan, Qiqi Xu, Weihan Ran, Shihuan Yang, Yunhong Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We present an amplitude-invariant phase shifter based on a PIN diode embedded in a Mach-Zehnder Interferometer for optical phased arrays. The dynamic power contrast is lower than 0.42 dB over a p phase shift. &#1.9; O... 详细信息

关键词： Phase shifters

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Bandwidth Enhancement of Silicon Thermo-Optic Phase Shifter with Electronic-Photonic Co-Design

Bandwidth Enhancement of Silicon Thermo-Optic Phase Shifter ...

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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： Han, keyi Lu, Liangjun Li, Xin Liu, Chuxin Xu, Weihan Guo, Yuyao Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

Based on a resistance-capacitance equalizer, we demonstrated a silicon thermo-optic phase shifter with a rise time of 2.3 &#1.1.s and a modulation bandwidth of 250 kHz, offering 1. times enhancement over the original ... 详细信息

ISBN: (纸本)9781957171395

Based on a resistance-capacitance equalizer, we demonstrated a silicon thermo-optic phase shifter with a rise time of 2.3 µs and a modulation bandwidth of 250 kHz, offering 1. times enhancement over the original standalone implementation. © Optica Publishing Group 2024

关键词： Silicon photonics

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Amplitude-Invariant Phase Shifter Based on Carrier-Injection Mechanism for optical Phased Array

Amplitude-Invariant Phase Shifter Based on Carrier-Injection...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Yuan, Qiqi Xu, Weihan Ran, Shihuan Yang, Yunhong Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab Navigation and Location Services Shanghai Institute for Advanced Communication and Data Science Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

ISBN: (纸本)9781957171395

关键词： Mach-Zehnder interferometers

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Deep learning-based approach for efficient ge neration and transmission of high-definition computer-generated holography 14

Deep learning-based approach for efficient ge neration and t...

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Advances in Display Technologies XIV 2024

作者： Jia, Jidong Dong, Zhenxing Ling, Yuye Li, Yan Su, Yikai Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China State Key Lab of Advanced Optical Communication Systems and Networks Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China

ISBN: (纸本)9781510670761

Deep learning-based computer-generated holography (CGH) has recently demonstrated tremendous potential in three-dimensional (3D) displays and yielded impressive display quality. However, current CGH techniques are mostly limited on generating and transmitting holograms with a resolution of 1.80p, which is far from the ultra-high resolution (1.K+) required for practical virtual reality (VR) and augmented reality (AR) applications to support a wide field o f v iew a nd l arge e ye b ox. O ne o f t he m ajor o bstacles i n c urrent C GH f rameworks lies in the limited memory available on consumer-grade GPUs which could not facilitate the generation of high-definition h olograms. M oreover, t he e xisting h ologram c ompression r ate c an h ardly p ermit t he transmission of high-resolution holograms over a 5G {1. network, which is crucial for mobile application. To overcome the aforementioned challenges, we proposed an efficient jo int fr amework fo r ho logram ge neration and transmission to drive the development of consumer-grade high-definition h olographic d isplays. S pecifically, for hologram generation, we proposed a plug-and-play module that includes a pixel shuffle la yer an d a lightweight holographic super-resolution network, enabling the current CGH networks to generate high-definition holograms. For hologram transmission, we presented an efficient ho lographic tr ansmission fr amework ba sed on foveated rendering. In simulations, we have successfully achieved the generation and transmission of holograms with a 4K resolution for the first t ime o n a n N VIDIA G eForce RTX 3 090 G PU. We b elieve t he p roposed framework could be a viable approach for the evergrowing data issue in holographic displays. © 2024 SPIE.

关键词： Computer generated holography

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Microwave Signal Generation by Heterodyning Dual Lasers Injection-locked to a Single Microring Resonator

Microwave Signal Generation by Heterodyning Dual Lasers Inje...

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2024 Asia communications and Photonics Conference, ACP 2024 and International Conference on Information Photonics and {1. communications, IPOC 2024

作者： Siyu, E. Guo, Yuyao Li, Xinhang Fan, Yihao Jin, Minhui Li, Yu Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate the co-injection locking of two lasers to a high-Q MRR, achieving a linewidth of ~1. Hz. Through heterodyne synthesis, the resulting microwave signal exhibits a drift of only 898 kHz over 1. hours. &#1.... 详细信息

ISBN: (纸本)9798350379266

关键词： Heterodyning

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Self-injection-locking FMCW laser source on the lithium niobate platform

Self-injection-locking FMCW laser source on the lithium niob...

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2024 Conference on Lasers and Electro-Optics, CLEO 2024

作者： Li, Xinhang Cai, Minglu Xu, Ruiyang Fan, Yihao Liu, Chuxin Guo, Yuyao Siyu, E. Jin, Minhui Wu, Kan Li, Yu Lu, Liangjun Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate a hybrid-integrated linear-chirp frequency-modulated continuous wave laser based on self-injection locking to a high-Q lithium niobate multimode microring resonator with a 1.kHz linewidth and 1.MHz modu... 详细信息

ISBN: (纸本)9781957171395

关键词： Continuous wave lasers

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Ultra-narrow-linewidth high-power hybrid integrated self-injection locking laser on the silicon platform

Ultra-narrow-linewidth high-power hybrid integrated self-inj...

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2024 Conference on Lasers and Electro-Optics/Pacific Rim, CLEO-PR 2024

作者： Li, Xinhang Guo, Yuyao Siyu, E. Fan, Yihao Liu, Chuxin Jin, Minhui Xu, Weihan Lu, Liangjun Li, Yu Chen, Jianping Zhou, Linjie State Key Laboratory of Advanced Optical Communication Systems and Networks Shanghai Key Lab of Navigation and Location Services Department of Electronic Engineering Shanghai Jiao Tong University Shanghai200240 China SJTU-Pinghu Institute of Intelligent Optoelectronics Pinghu314200 China

We demonstrate a III-V/silicon hybrid integrated self-injection locking (SIL) laser that utilizes a multimode-waveguide-based high-Q (1.41.#21.;1.6) microring resonator (MRR) with 85 Hz intrinsic linewidth, 1.8 kHz in... 详细信息

We demonstrate a III-V/silicon hybrid integrated self-injection locking (SIL) laser that utilizes a multimode-waveguide-based high-Q (1.41.1.6) microring resonator (MRR) with 85 Hz intrinsic linewidth, 1.8 kHz integral linewidth and 1.5 mW output power. © 2024 The Author(s)

关键词： Linewidth

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Self-injection-locking FMCW laser source on the lithium niobate platform

Self-injection-locking FMCW laser source on the lithium niob...

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

关键词： Continuous wave lasers

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Direct detection with an optimal transfer function:toward the electrical spectral efficiency of coherent homodyne detection

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Opto-Electronic Science 2025年第2期4卷 1-15页

作者： Xingfeng Li Jingchi Li Xiong Ni Hudi Liu Qunbi Zhuge Haoshuo Chen William Shieh Yikai Su State Key Lab of Advanced Optical Communication Systems and Networks Department of Electronic EngineeringShanghai Jiao Tong UniversityShanghai 200240China Nokia Bell Labs 600 Mountain AveMurray HillNJ 07974USA School of Engineering Westlake UniversityHangzhou 310030China

Complex-valued double-sideband direct detection(DD)can reconstruct the optical field and achieve a high electrical spectral efficiency(ESE)comparable to that of a coherent homodyne receiver,and DD does not require a costly local oscillator ***,a fundamental question remains if there is an optimal DD receiver structure with the simplest design to approach the performance of the coherent homodyne *** study derives the optimal DD receiver structure with an optimal transfer function to recover a quadrature amplitude modulation(QAM)signal with a near-zero guard band at the central frequency of the *** derive the theoretical ESE limit for various detection schemes by invoking Shannon’s *** proposed scheme is closest to coherent homodyne detection in terms of the theoretical ESE *** leveraging a WaveShaper to construct the optimal transfer function,we conduct a proof-of-concept experiment to transmit a net 228.85-Gb/s 64-QAM signal over an 80-km single-mode fiber with a net ESE of 8.76 b/s/*** the best of our knowledge,this study reports the highest net ESE per polarization per wavelength for DD transmission beyond 40-km single-mode *** a comprehensive metric,denoted as 2ESE×Reach,we achieve the highest 2ESE×Reach per polarization per wavelength for DD transmission.

关键词： optical {1. direct detection optical field recovery electrical spectral efficiency

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