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| 1 | Recent progress of integrated circuits and optoelectronic chips显示文摘Integrated circuits(ICs)and optoelectronic chips are the foundation stones of the modern information society.The IC industry has been driven by the so-called'Moore's law'in the past 60 years,and now has entered the post Moore's law era.In this paper,we review the recent progress of ICs and optoelectronic chips.The research status,technical challenges and development trend of devices,chips and integrated technologies of typical IC and optoelectronic chips are focused on.The main contents include the development law of IC and optoelectronic chip technology,the IC design and processing technology,emerging memory and chip architecture,brain-like chip structure and its mechanism,heterogeneous integration,quantum chip technology,silicon photonics chip technology,integrated microwave photonic chip,and optoelectronic hybrid integrated chip. | Yue HAO Shuiying XIANG Genquan HAN Jincheng ZHANG Xiaohua MA Zhangming ZHU Xingxing GUO Yahui ZHANG Yanan HAN Ziwei SONG Yan LIU Ling YANG Hong ZHOU Jiangyi SHI Wei ZHANG Min XU Weisheng ZHAO Biao PAN Yangqi HUANG Qi LIU Yimao CAI Jian ZHU Xin OU Tiangui YOU Huaqiang WU Bin GAO Zhiyong ZHANG Guoping GUO Yonghua CHEN Yong LIU Xiangfei CHEN Chunlai XUE Xingjun WANG Lixia ZHAO Xihua ZOU Lianshan YAN Ming LI | 2021 | Science China(Information Sciences)2021，64，10： | 7 |
| 2 | Covert wireless communication using massive optical comb channels for deep denoising显示文摘Covert wireless communications are unprecedentedly vital for security and privacy of individuals,government,and military bodies.Besides encryption,hiding signal transmission deeply under noise background highly proliferates the covertness in the physical layer.A deep signal hiding leads to a low interception probability at the interceptor but a poor data recovery at the receiver.To ensure both high covertness and high-fidelity recovery,massive and dense optical comb channels are utilized for deep denoising through the analog spectrum convolution.Using an external modulation-based optical frequency comb(OFC)and a single detection branch,the available optical comb channels can sustainably scale up by breaking or greatly mitigating physical bottlenecks on immense hardware and spectrum requirements.Thus,a striking signal-to-noise ratio(SNR)rise can be achieved for deep denoising.Combination of 1024 comb channels(the first parallel comb channel number beyond 1000)and the analog spectrum convolution enable a record SNR enhancement of 29 dB for a microwave signal with a 10.24 GHz bandwidth and a 10 Mbit/s data rate,which is deeply hidden below the in-band noises by 18 dB or even 30 dB in both the frequency and time domains.This method opens a new avenue for covert communications. | XIANGLEI YAN XIHUA ZOU PEIXUAN LI WEI PAN LIANSHAN YAN | 2021 | Photonics Research2021，9，6： | 3 |
| 3 | Macro-circuit simulation and optimal design for ferroelectric liquid crystal based on dielectric properties显示文摘 | 王梦遥 Pan Wei Luo Bin Zhang Weili Zou Xihua Xiong Yue | 2007 | High Technology Letters2007，13，4： | 2 |
| 4 | All-optical processing to optical and radio frequency(RF) signals显示文摘Signal processing is always the heart of the overall information technology and industry,providing enabling solutions for the processing,understanding,learning,retrieval,mining,and extraction of information from different signals.Regarding the all-optical signal processing,it dates back to the 1980s when the electronic bottleneck | Xihua Zou Wei Pan Lianshan Yan | 2015 | Science Bulletin2015，60，24： | 2 |
| 5 | Photonic generation of microwave signals with tunabilities显示文摘Microwave photonic signal generation schemes based on the frequency to time mapping and external modulation are reviewed.We concentrate on those configurations that can provide tunability of frequency,phase of signal,modulation formats(i.e.,2PSK,2FSK,etc.),as well as pulse shapes(i.e.,UWBs-,triangle-and arbitraryshaped,etc.). | Hengyun Jiang Lianshan Yan Jia Ye Wei Pan Bin Luo Xihua Zou | 2014 | Chinese Science Bulletin2014，59，22： | 2 |
| 6 | An approach to the measurement of microwave frequency based on optical power monitoring显示文摘 | Chi Hao Zou Xihua Yao Jianping | 2008 | IEEE Photonics Technology Letters2008，20，14： | 1 |
| 7 | Frequency-doubling optoeleetronic oscillator using carrier suppression and Brillouin-gain-assisted car- rier reeovery显示文摘 | Liu Xinkai Pan Wei Zou Xihua | 2013 | IEEE Photonics Journal2013，5，66： | 1 |
| 8 | Photonie frequency measurement and signal separation for pulsed/CW microwave signals显示文摘 | Lu Bing Pan Wei Zou Xihua | 2013 | IEEE Photonics Technology Letters2013，25，5： | 1 |
| 9 | An approach to the measurement of microwave fre- quency based on optical power monitoring 显示文摘 | Hao Chi Xihua Zou and Jianping Yao | 2008 | IEEE Photonics Technology Letters2008，20，14： | 1 |
| 10 | Photonic approach to microwave frequency measurement with digital circular-code results 显示文摘 | ZOU XiHua PAN Wei LUO Bin | 2011 | Opt Exp2011，19，20： | 1 |
| 11 | Silicon-integrated high-speed mode and polarization switch-andselector显示文摘On-chip optical communications are growingly aiming at multimode operation together with mode-division multiplex-ing to further increase the transmission capacity.Optical switches,which are capable of optical signals switching at the nodes,play a key role in optical networks.We demonstrate a 2×2 electro-optic Mach-Zehnder interferometer-based mode-and polar-ization-selective switch fabricated by standard complementary metal-oxide-semiconductor process.An electro optic tuner based on a PN-doped junction in one of the Mach-Zehnder interferometer arms enables dynamic switching in 11 ns.For all the channels,the overall insertion losses and inter-modal crosstalk values are below 9.03 and-15.86 dB at 1550 nm,respect-ively. | Yihang Dong Yong Zhang Jian Shen Zihan Xu Xihua Zou Yikai Su | 2022 | Journal of Semiconductors2022，43，2： | 1 |
| 12 | An approach to the measurement of microwave frequency based on optical power monitoring 显示文摘 | Hao Chi Zou Xihua Yao Jianping | 2008 | IEEE Photonics Technology Letters2008，20，14： | 1 |
| 13 | Controllable growth of double wall carbon nanotubes in a floating catalytic system显示文摘 | Zou Zhenping Ci Lijie Chen Xihua | 2003 | Carbon2003，41，： | 1 |
| 14 | Instantaneous microwave frequency measurement with improved measurement range and resolution based on simultaneous phase modulation and intensity modulation 显示文摘 | Zou Xihua Pan Shilong | 2009 | Journal of Lightwave Technology2009，27，23： | 1 |
| 15 | An approach to the measurement of microwave fre- quency based on optical power monitoring 显示文摘 | Hao Chi Xihua Zou and Jianping Yao | 2008 | IEEE PHOTONICS TECHN-OLOGY LET- TERS2008，20，14： | 1 |
| 16 | Covert wireless communication using massive optical comb channels for deep denoising: erratum显示文摘The position of the parentheses in the original manuscript is incorrect.This is a clerical error,and all of the theories and conclusions are unchanged by this correction. | Xianglei Yan Xihua Zou Peixuan Li Wei Pan Lianshan Yan | 2022 | Photonics Research2022，10，2： | 0 |
| 17 | Mode hopping and polarization switching of mutually coupled vertical-cavity surface-emitting lasers显示文摘We perform a theoretical study on the polarization-resolved compound lasing mode (CLM) of two mutually coupled vertical-cavity surface-emitting lasers (VCSELs). Different solutions of CLMs are derived though stability analysis of the spin-flip model. The dynamical evolvements of CLMs with the existence of polarization degrees of freedom are also charactered. The most stable CLM with the smallest carrier density tend to be excited, since the gain needed for this mode to emit is the lowest. In the given system, varying values of injection rate or birefringence, etc., will change the generation of the preferred CLMs in the two polarization directions, and thus influence the polarization switching (PS) characteristics. Thus, hoppings between CLMs are also companied by PSs. Through mapping of average power in the parameter space, the influences of coupling rate and anisotropy parameters (linear dichroism and linear birefringence) on PS and hopping between CLMs are discussed. | ZHANG WeiLi PAN Wei LUO Bin WANG MengYao ZOU XiHua | 2008 | Science in China(Series F)2008，51，5： | 0 |
| 18 | High-sensitivity and fast-response fiber optic temperature sensor using an anti-resonant reflecting optical waveguide mechanism显示文摘Temperature sensing is essential for human health monitoring.High-sensitivity(>1 nm∕℃)fiber sensors always require long interference paths and temperature-sensitive materials,leading to a long sensor and thus slow response(6–14 s).To date,it is still challenging for a fiber optic temperature sensor to have an ultrafast(~ms)response simultaneously with high sensitivity.Here,a side-polished single-mode/hollow/single-mode fiber(SPSHSF)structure is proposed to meet the challenge by using the length-independent sensitivity of an anti-resonant reflecting optical waveguide mechanism.With a polydimethylsiloxane filled sub-nanoliter volume cavity in the SP-SHSF,the SP-SHSF exhibits a high temperature sensitivity of 4.223 nm/℃ with a compact length of 1.6 mm,allowing an ultrafast response(16 ms)and fast recovery time(176 ms).The figure of merit(FOM),defined as the absolute ratio of sensitivity to response time,is proposed to assess the comprehensive performance of the sensor.The FOM of the proposed sensor reaches up to 263.94(nm/℃)∕s,which is more than two to three orders of magnitude higher than those of other temperature fiber optic sensors reported previously.Additionally,a threemonth cycle test shows that the sensor is highly robust,with excellent reversibility and accuracy,allowing it to be incorporated with a wearable face mask for detecting temperature changes during human breathing.The high FOM and high stability of the proposed sensing fiber structure provide an excellent opportunity to develop both ultrafast and highly sensitive fiber optic sensors for wearable respiratory monitoring and contactless in vitro detection. | ZHIBIN LI ZIYE WU ZHUOQI LI LIANGXUN OU WENXIANG ZHANG ZHICONG LAI YU ZHANG MENGYUAN XIE JIEYUAN TANG WENGUO ZHU HUADAN ZHENG YONGCHUN ZHONG XIONG DENG XIHUA ZOU ZHE CHEN JIANHUI YU | 2023 | Photonics Research2023，11，8： | 0 |
| 19 | Broadband V-band Radio over Fiber Uplink Fronthaul Transmission Using Cascaded Microwave Photonic Downconversion Topology显示文摘Exploiting microwave photonic(MWP)techniques to generate and distribute high-frequency millimeter-wave(mm-wave)signals,termed mm-wave radio over fiber(m-RoF)signals,holds considerable potential for achieving highdensity and high-capacity fifth-generation and beyond networks.Herein,we experimentally validate a broadband m-RoF uplink fronthaul transmission system using the MWP downconversion concept,which comprises receiving and processing radio-frequency(RF)signals in the unlicensed V-band at around 60 GHz.The proposed system harnesses the simple cascaded modulator topology,in which an ultrawideband off-the-shelf Mach–Zehnder modulator(MZM)renders a simplestructured remote radio head by directly encoding the broadband 60 GHz uplink RF signal into the optical carrier.The nonlinear transfer function of another MZM at the center unit is explored to achieve subharmonic downconversion using cost-effective low-frequency local oscillator signals.Based on proof-of-concept experiments,mm-wave four quadrature amplitude modulation orthogonal frequency-division multiplexing signals centered at frequencies ranging from 51 GHz to 70 GHz are successfully downconverted into signals at the intermediate frequency(IF)of 1.4 GHz.In the case of 1.2 m mm-wave,free-space,and 5 km m-RoF transmissions,the obtained IF signals with a total bandwidth of 2.4 GHz achieve a bit-to-error ratio performance lower than the 7%hard-decision forward error correction limit of 3.8×10^(−3).A gross bit rate of 10 Gbit/s can be achieved over a total spectrum of up to 10 GHz,which fully covers the globally unlicensed V-band of 57-66 GHz. | Zhang Hui Li Peixuan Zou Xihua Bai Wenlin Pan Wei Yan Lianshan | 2022 | 激光与光电子学进展2022，59，13： | 0 |
| 20 | Integrated sensing and communication in an optical fibre显示文摘The integration of high-speed optical communication and distributed sensing could bring intelligent functionalities to ubiquitous optical fibre networks,such as urban structure imaging,ocean seismic detection,and safety monitoring of underground embedded pipelines.This work demonstrates a scheme of integrated sensing and communication in an optical fibre(ISAC-OF)using the same wavelength channel for simultaneous data transmission and distributed vibration sensing.The scheme not only extends the intelligent functionality for optical fibre communication system,but also improves its transmission performance.A periodic linear frequency modulation(LFM)light is generated to act as the optical carrier and sensing probe in PAM4 signal transmission and phase-sensitive optical time-domain reflectometry(Φ-OTDR),respectively.After a 24.5 km fibre transmission,the forward PAM4 signal and the carriercorrespondence Rayleigh backscattering signal are detected and demodulated.Experimental results show that the integrated solution achieves better transmission performance(~1.3 dB improvement)and a larger launching power(7 dB enhancement)at a 56 Gbit/s bit rate compared to a conventional PAM4 signal transmission.Meanwhile,a 4m spatial resolution,4.32-nε/√Hz strain resolution,and over 21 kHz frequency response for the vibration sensing are obtained.The proposed solution offers a new path to further explore the potential of existing or future fibre-optic networks by the convergence of data transmission and status sensing.In addition,such a scheme of using shared spectrum in communication and distributed optical fibre sensing may be used to measure non-linear parameters in coherent optical communications,offering possible benefits for data transmission. | Haijun He Lin Jiang Yan Pan Anlin Yi Xihua Zou Wei Pan Alan E.Willner Xinyu Fan Zuyuan He Lianshan Yan | 2023 | Light(Science & Applications)2023，12，5： | 0 |
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