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Conference on Lasers and Electro-Optics (CLEO)

作者： Changhao Han Jun Qin Qipeng Yang Zhao Zheng Haowen Shu Yunhao Zhang Yichen Wu Yu Sun Junde Lu Yan Zhou Zhangfeng Ge Lei Wang Zhixue He Shaohua Yu Weiwei Hu Chao Peng John E. Bowers Xingjun Wang State Key Laboratory of Advanced Optical Communications System and Networks School of Electronics Peking University Beijing China Department of Electrical and Computer Engineering University of California Santa Barbara CA US Key Laboratory of Information and Communication Systems Ministry of Information Industry Beijing Information Science and Technology University Beijing China Frontiers Science Center for Nano-optoelectronics Peking University Beijing China Peng Cheng Laboratory Shenzhen China Peking University Yangtze Delta Institute of Optoelectronics Nantong China

We experimentally demonstrate PAM-4 optical transmission beyond 224 Gbps based on an ultrahigh-bandwidth slow-light silicon modulator in C-band with the combination of the artificial neural network equalizers.

ISBN: (纸本)9798350369311

关键词： Equalizers C-band Optical computing Artificial neural networks Electro-optic modulators Optical fiber networks Silicon photonics Ultrafast optics Optical modulation Passband

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Nonvolatile electrically reconfigurable silicon photonics enabled by back-end-of-line integration of phase change materials 12

Nonvolatile electrically reconfigurable silicon photonics en...

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Optoelectronic Devices and Integration XII 2023

作者： Li, Junying Wei, Maoliang Xu, Kai Tang, Bo Yun, Yiting Zhang, Peng Wu, Yingchun Bao, Kangjian Lei, Kunhao Chen, Zequn Ma, Hui Sun, Chunlei Liu, Ruonan Li, Ming Li, Lan Lin, Hongtao State Key Laboratory of Modern Optical Instrumentation Key Laboratory of Micro-Nano Electronics and Smart System of Zhejiang Province College of Information Science and Electronic Engineering Zhejiang University Hangzhou310027 China Hangzhou Institute for Advanced Study University of Chinese Academy of Sciences Hangzhou310024 China Institute of Microelectronics of the Chinese Academy of Sciences Beijing100029 China Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of Engineering Westlake University Zhejiang Hangzhou310030 China State Key Laboratory on Integrated Optoelectronics Institute of Semiconductors Chinese Academy of Sciences Beijing100083 China

ISBN: (纸本)9781510667778

Nonvolatile light-field manipulation via electrically-driven phase transition of chalcogenide phase change materials (PCMs) is regarded as one of the most powerful solutions to low-power-consumption and compact integrated reconfigurable photonics. However, before the breakthrough in large-scale integration approaches linked to wafer foundries, phase-change non-volatile reconfigurable photonics could hardly see their widespread practical applications. Here we demonstrate nonvolatile photonic devices fabricated by back-end-of-line (BOEL) integration of PCMs into the commercial silicon photonics platform. A narrow trench etched into the BOEL dielectric layer exposed the waveguide core and allowed for the direct deposition of various PCM films on the waveguide in the functional areas. Fine-tuning the nonvolatile phase transition of Sb2Se3 via a PIN microheater was verified by realizing the post-fabrication trimming of silicon photonic devices. Our work highlights a reliable platform for large-scale PCM-integrated photonics and validates its precise nonvolatile reconfigurability. © 2023 SPIE.

关键词： Phase change materials

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Passivation of degradation path enables high performance perovskite nanoplatelet lasers with high operational stability

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Photonics Research 2022年第6期10卷 1440-1452页

作者： GUOHUI LI HUIHUI PI YANFU WEI BOLIN ZHOU YA GAO RONG WEN YUYING HAO HAN ZHANG BENG S.ONG YANXIA CUI College of Physics and Optoelectronics Key Laboratory of Interface Science and Engineering in Advanced MaterialsKey Laboratory of Advanced Transducers and Intelligent Control System of Ministry of EducationTaiyuan University of TechnologyTaiyuan 030024China Collaborative Innovation Centre for Optoelectronic Science and Technology Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong ProvinceCollege of Physics and Optoelectronic EngineeringShenzhen Key Laboratory of Micro-Nano Photonic Information TechnologyGuangdong Laboratory of Artificial Intelligence and Digital Economy(SZ)Shenzhen UniversityShenzhen 518060China Department of Chemistry Research Centre of Excellence for Organic ElectronicsInstitute of Advanced MaterialsHong Kong Baptist UniversityKowloon TongHong KongChina

MAPbI_(3)perovskite has attracted widespread interests for developing low-cost near infrared semiconductor gain ***,it faces the instability issue under operation conditions,which remains a critical *** is found that the instability of the MAPbI_(3)nanoplatelet laser comes from the thermal-induced degradation progressing from the surface defects towards neighboring *** using PbI_(2) passivation,the defect-initiated degradation is significantly suppressed and the nanoplatelet degrades in a layer-by-layer way,enabling the MAPbI_(3)laser to sustain for 4500 s(2.7×10^(7) pulses),which is nearly three times longer than that of the nanoplatelet laser without ***,the PbI_(2) passivated MAPbI_(3)nanoplatelet laser with the nanoplatelet cavity displays a maximum quality factor up to∼7800,the highest reported for all MAPbI_(3)nanoplatelet ***,a high stability MAPbI_(3)nanoplatelet laser that can last for 8500 s(5.1×10^(7) pulses)is demonstrated based on a dual passivation strategy,by retarding the defect-initiated degradation and surface-initiated degradation *** work provides in-depth insights for understanding the operating degradation of perovskite lasers,and the dual passivation strategy paves the way for developing high stability near infrared semiconductor laser media.

关键词： stability initiated high

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Highly Efficient Generation of Non-diffraction Bessel Beams with Metasurface 3

Highly Efficient Generation of Non-diffraction Bessel Beams ...

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3rd IEEE International Conference on Electronic information and Communication Technology, ICEICT 2020

作者： Zeng, Ting Deng, Li Li, Shufang Feng, Botao Beijing Laboratory of Advanced Information Networks Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing China College of Electronics and Information Engineering Shenzhen University Shenzhen China

ISBN: (纸本)9781728190457

A reflection metasurface that can generate non-diffraction Bessel beams and achieve anomalous reflection with high efficiency at 5.8 GHz is proposed in this paper. The unit it utilizes has excellent amplitude and phase characteristics, greatly facilitating the construction of the proposed metasurface and laying a solid foundation for the improvement of efficiency. According to non-diffraction theory and anomalous reflection law, two metasurfaces are designed for comparison. The simulation results show that the designed metasurfaces successfully realize the non-diffractive beam with a focusing distance of 126 mm (2.44 λ0), and can bend the normally reflected wave to the direction 10° from the +z direction in a vertical plane 45° away from the +x direction. The average efficiency of the metasurface within the focusing range is as high as 84.5%, thus could be used as radio energy transmission, telecommunication multiplexing and accurate detection devices. © 2020 IEEE.

关键词： Diffraction

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An One-dimensional Holographic Antenna for RFID Reader 3

An One-dimensional Holographic Antenna for RFID Reader

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3rd IEEE International Conference on Electronic information and Communication Technology, ICEICT 2020

作者： Ren, Xiaokui Deng, Li Li, Shufang Zhang, Chen Feng, Botao Beijing Laboratory of Advanced Information Networks Beijing Key Laboratory of Network System Architecture and Convergence Beijing University of Posts and Telecommunications Beijing China College of Electronics and Information Engineering Shenzhen University Shenzhen China

A one-dimensional holographic metasurface antenna that can achieve full-angle symmetrical dual-beam rapid scanning while keeping its position unchanged is proposed. The principle of holographic antenna and beam deflec... 详细信息

ISBN: (纸本)9781728190457

关键词： Holography

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Reflective Metasurface for Controlling the Beam Divergence Angles of Dual-mode OAM Waves 3

Reflective Metasurface for Controlling the Beam Divergence A...

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3rd IEEE International Conference on Electronic information and Communication Technology, ICEICT 2020

作者： He, Xiaoyuan Deng, Li Feng, Botao Beijing Laboratory of Advanced Information Networks Beijing Key Laboratory of Network System Architecture Convergence Beijing University of Posts and Telecommunications Beijing China College of Electronics and Information Engineering Shenzhen University Shenzhen China

ISBN: (纸本)9781728190457

For dealing with the problem of receiving multimode orbital-angular momentum (OAM) waves resulting from different beam divergence angles of OAM waves with different topological charges, it is essential to control the beam divergence angles of OAM waves. In this paper, a method is proposed to control the beam divergence angles of multi-mode OAM waves without modifying the inherent topological charges by a reflective metasurface. Based on this method, a reflective metasurface is properly designed to generate dual-mode OAM waves with equal beam divergence angle. As a dual-mode OAM waves generator, the reflective metasurface is composed of 31x31 metal-insulator-metal elements which is capable to manipulate dual-polarized electromagnetic waves (EMWs) independently. Furthermore, as a beam divergence controller, the reflective metasurface is properly divided into two regions that are responsible for +1 mode and +3 mode OAM waves generations. In this way, dual-mode OAM waves with equal beam divergence angle can be generated by the proposed reflective metasurface. The proposed design provides an efficient technology to control the beam divergence angles of multi-mode OAM waves flexibly, which is conductive to simplify the receiving device in OAM based communication systems. © 2020 IEEE.

关键词： Topology

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Use OFDM in OAM Communication to Redcuce Multi-path Effects 3

Use OFDM in OAM Communication to Redcuce Multi-path Effects

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3rd IEEE International Conference on Electronic information and Communication Technology, ICEICT 2020

作者： Shu, Jingyue Deng, Li Li, Shufang Feng, Botao Beijing Laboratory of Advanced Information Networks Beijing Key Laboratory of Network System Architecture Convergence Beijing University of Posts and Telecommunications Beijing China College of Electronics and Information Engineering Shenzhen University Shenzhen China

ISBN: (纸本)9781728190457

The orbital angular momentum (OAM) has raised great attention for its potential to enhance the capacity of wireless communication system. The performance of OAM communication is dependent on the accuracy of phase information. In multi-path channel, the accuracy is destroyed. In this paper, we use orthogonal frequency division multiplexing (OFDM)before OAM modulation to enhance communication performance. © 2020 IEEE.

关键词： Orthogonal frequency division multiplexing

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A new quantum machine learning algorithm: split hidden quantum Markov model inspired by quantum conditional master equation

arXiv

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arXiv 2023年

作者： Li, Xiao-Yu Zhu, Qin-Sheng Hu, Yong Wu, Hao Yang, Guo-Wu Yu, Lian-Hui Chen, Geng School of Information and Software Engineering University of Electronic Science and Technology of China Chengdu610054 China School of Physics University of Electronic Science and Technology of China Chengdu610054 China Advanced Cryptography and System Security Key Laboratory of Sichuan Province Chengdu610103 China Institute of Electronics and Information Industry Technology of Kash Kash 844000 China School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu610054 China

The Hidden Quantum Markov Model (HQMM) has significant potential for analyzing time-series data and studying stochastic processes in the quantum domain as an upgrading option with potential advantages over classical Markov models. In this paper, we introduced the split HQMM (SHQMM) for implementing the hidden quantum Markov process, utilizing the conditional master equation with a fine balance condition to demonstrate the interconnections among the internal states of the quantum system. The experimental results suggest that our model outperforms previous models in terms of scope of applications and robustness. Additionally, we establish a new learning algorithm to solve parameters in HQMM by relating the quantum conditional master equation to the HQMM. Finally, our study provides clear evidence that the quantum transport system can be considered a physical representation of HQMM. The SHQMM with accompanying algorithms present a novel method to analyze quantum systems and time series grounded in physical implementation. © 2023, CC BY-NC-SA.

关键词： Stochastic systems

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Tunable narrow-band single-channel add-drop integrated optical filter with ultrawide FSR

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PhotoniX 2022年第1期3卷 312-323页

作者： Chunlei Sun Yuexin Yin Zequn Chen Yuting Ye Ye Luo Hui Ma Lichun Wang Maoliang Wei Jialing Jian Renjie Tang Hao Dai Jianghong Wu Junying Li Daming Zhang Hongtao Lin Lan Li Key Laboratory of 3D Micro/Nano Fabrication and Characterization of Zhejiang Province School of EngineeringWestlake UniversityHangzhou 310024China Institute of Advanced Technology Westlake Institute for Advanced StudyHangzhou 310024China State Key Laboratory of Integrated Optoelectronics College of Electronic Science and EngineeringJilin University2699 Qianjin StreetChangchun 130012China Key Laboratory of Micro-Nano Electronics and Smart System of Zhejiang Province College of Information Science and Electronic EngineeringZhejiang UniversityHangzhou 310027China School of Microelectronics Zhejiang UniversityHangzhou 310027China.

Free-spectral-range(FSR)-free optical filters have always been a critical challenge for photonic integrated circuits.A high-performance FSR-free filter is highly desired for communication,spectroscopy,and sensing *** significant progress in integrated optical filters,the FSR-free filter with a tunable narrow-band,high out-of-band rejection,and large fabrication tolerance has rarely been *** this paper,we propose an exact and robust design method for add-drop filters(ADFs)with an FSR-free operation capability,a sub-nanometer optical bandwidth,and a high out-of-band rejection(OBR)*** achieved filter has a 3-dB bandwidth of<0.5 nm and an OBR ratio of 21.5 dB within a large waveband of 220 nm,which to the best of our knowledge,is the largest-FSR ADF demonstrated on a silicon photonic *** filter exhibits large tunability of 12.3 nm with a heating efficiency of 97 pm/mW and maintains the FSR-free feature in the whole tuning *** addition,we fabri-cated a series of ADFs with different periods,which all showed reliable and excellent performances.

关键词： Integrated devices Silicon photonics Optical filters FSR-free filters Tunable filters

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Detection of N-Propanol Down to Sub-Ppm Level Using P-Type Delafossite AgCrO2 Nanoparticles

SSRN

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SSRN 2022年

作者： Li, Wentao Kong, Lingwei Li, Xifeng Zhu, Wenhuan Zhang, Jianhua Liu, Hai Key Laboratory of Advanced Display and System Applications Ministry of Education Shanghai University 149 Yanchang Road Shanghai200072 China Department of Micro/Nano Electronics School of Electronic Information and Electrical Engineering Shanghai Jiao Tong University Shanghai200240 China

As an important biomarker of lung cancer, n-propanol at sub-ppm level is still challenging to be detected for a simple and immediate early diagnose. In this work, a new n-propanol gas sensor with an ultralow detection limit down to 100 ppb is presented using AgCrO2 nanoparticles synthesized by a simple hydrothermal method. Compared with the congeneric CuCrO2 and commercial SnO2 , AgCrO2 exhibits prevailing performances, including a higher selectivity, dynamic response, logarithmical linearity, but lower working temperature. The first principles calculation and the energy band theoretical analysis are combined to elucidate the sensing mechanism, in which the chemical adsorption of gaseous molecules to the silver followed by the dehydrogenation on chromium on the surface of AgCrO2 is responsible to the outstanding susceptibility towards n-propanol. The proposed metal oxide semiconductor gas sensor capable of sub-ppm n-propanol detection provides a route to design and optimize the sensitive material system for the advanced trace detection of the volatile organic compounds. © 2022, The Authors. All rights reserved.

关键词： Volatile organic compounds

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