典型文献
Switchable instantaneous frequency measurement by optical power monitoring based on DP-QPSK modulator
文献摘要：
We propose and analyze an instantaneous frequency measurement system by using optical power monitoring tech-nique with improved resolution.The primary component adopted in the proposal is a dual-polarization quadrature phase shift keying(DP-QPSK)modulator which is used to modulate the microwave signal that has a designed time delay and phase shifting.The generated optical signal is sent to polarization beam splitter(PBS)in DP-QPSK modulator.Owing to the complementary transmission nature of polarization interference introduced by PBS,the frequency information is converted into the optical power and the relationship between the amplitude comparison function(ACF)and microwave frequency to be measured is established.Thus,the frequency of the microwave signal can be easily measured through monitoring the optical powers of the two output ports of the PBS.Furthermore,by adjusting the direct current(DC)biases of the DP-QPSK modulator instead of changing the electrical delay,the measurement range and resolution can be switched.In this paper,the basic principle of the instantaneous frequency measurement system is derived in detail,and simulation has been performed to investigate the resolution,the measurement range,and the influence of imperfection devices.The pro-posed scheme is wavelength-independent and its measurement range is switchable,which can avoid the laser wavelength drifting problem and thus greatly increasing the system flexibility.
文献关键词：
中图分类号：
作者姓名：
Yu-Lin Zhu;Bei-Lei Wu;Jing Li;Mu-Guang Wang;Shi-Ying Xiao;Feng-Ping Yan
作者机构：
Institute of Lightwave Technology,Key Laboratory of All Optical Network and Advanced Telecommunication of EMC,Beijing Jiaotong University,Beijing 100044,China
文献出处：
引用格式：
[1]Yu-Lin Zhu;Bei-Lei Wu;Jing Li;Mu-Guang Wang;Shi-Ying Xiao;Feng-Ping Yan-.Switchable instantaneous frequency measurement by optical power monitoring based on DP-QPSK modulator)[J].中国物理B（英文版）,2022(04):380-391
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AB值：
0.549393
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