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作 者:Weilei Gou Yuan Yu Xinliang Zhang
机构地区:[1]Wuhan National Laboratory for Optoelectronics and School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China [2]Optics Valley Laboratory,Wuhan 430074,China
出 处:《Frontiers of Optoelectronics》2023年第3期35-41,共7页光电子前沿(英文版)
基 金:the National Natural Science Foundation of China(Grant No.61975249);the National Key Research and Development Program of China(Nos.2018YFB2201700 and 2018YFA0704403);the Program for HUST Academic Frontier Youth Team(No.2018QYTD08).
摘 要:Optical beating is the usual approach to generation of microwave signals.However,the highest frequency achievable for microwave signals is limited by the bandwidths of optoelectronic devices.To maximize the microwave frequency with a limited bandwidth of a photodetector(PD)and relieve the bandwidth bottleneck,we propose to generate microwave signals with the single sideband(SSB)format by beating a continuous wave(CW)light with an optical SSB signal.By simply adjusting the frequency diference between the CW light and the carrier of the optical SSB signal,the frequency of the generated microwave SSB signal is changed correspondingly.In the experiment,amplitude shift keying(ASK)microwave signals with the SSB format are successfully generated with diferent carrier frequencies and coding bit rates,and the recovered coding information agrees well with the original pseudo random binary sequence(PRBS)of 2^(7)−1 bits.The proposed approach can signifcantly relieve the bandwidth restriction set by optoelectronic devices in high-speed microwave communication systems.
关 键 词:Single sideband modulation Amplitude shift keying Microwave signal generation Microwave communication
分 类 号:TN91[电子电信—通信与信息系统]
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