Instantaneous microwave frequency measurement with single branch detection based on the birefringence effect

被引：4
|
作者：
Zhu, Wei [1 ,2 ]
Li, Jing [1 ,2 ]
Pei, Li [1 ,2 ]
Ning, Tigang [1 ,2 ]
Zheng, Jingjing [1 ,2 ]
Wang, Jianshuai [1 ,2 ]
机构：
[1] Beijing Jiaotong Univ, Inst Lightwave Technol, Key Lab All Opt Network & Adv Telecommun Network, Beijing 100044, Peoples R China
[2] Beijing Jiaotong Univ, Inst Lightwave Technol, Beijing 100044, Peoples R China
来源：
APPLIED OPTICS | 2022年 / 61卷 / 20期
关键词：
MEASUREMENT SYSTEM; CHANNELIZER;
D O I：
10.1364/AO.461728
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Instantaneous frequency measurement (IFM) with single branch detection based on the birefringence effect is proposed and experimentally demonstrated. The unknown microwave frequencies are modulated to pump a length of polarization maintaining fiber. Due to the fiber birefringence effect, the input light signal is decomposed into two orthogonal-polarization signals with a relative time delay. After detection, an amplitude comparison function (ACF) is obtained by comparing the alternating-current and direct-current powers. Therefore, no multipath detection is needed so that the electrical variations in the photonic link can be cancelled out in ACF. A theoretical analysis is given to illustrate the mechanism of the proposed IFM system. The disturbances are investigated and discussed in simulation. A proof-of-concept experiment is carried out for verification with a result of +/- 10.2 GHz over 2.2-5.2 GHz. (C) 2022 Optica Publishing Group
引用
收藏
页码：5894 / 5901
页数：8
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