Photon instantaneous microwave frequency measurement with adjustable measurement range based on an electro-optical polarization modulator

被引：12
作者：
Guo, Yanting [1 ,2 ]
Ma, Jianxin [1 ,2 ]
机构：
[1] Beijing Univ Posts & Telecommun, Sch Elect Engn, State Key Lab Infommt Photon & Opt Commun, Beijing 100876, Peoples R China
[2] Beijing Univ Posts & Telecommun, Beijing Key Lab Space Ground Interconnect & Conve, Sch Elect Engn, Beijing 100876, Peoples R China
来源：
APPLIED OPTICS | 2020年 / 59卷 / 07期
基金：
中国国家自然科学基金;
关键词：
TUNABLE RANGE;
D O I：
10.1364/AO.385542
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
This paper presents a simple photonic-assisted instantaneous microwave frequency measurement approach with an adjustable measurement range. In our scheme, different polarization processing is performed on the upper and the lower branches, and then the powers of the two branches are compared to obtain the amplitude comparison function (ACF), which provides the frequency-amplitude mapping. The measurement system is significantly simplified since only one polarization modulator (PolM) and one single laser source are required. In addition, our scheme achieves a larger ACF slope, which significantly increases the measurement resolution. In the simulation, a frequency measurement over the range of 3-42.8 GHz with measurement errors within +/- 0.1 GHz is achieved by optimizing the dc bias voltage applied to the PolM and the polarization angle. This scheme provides a reference for measuring the unknown instantaneous frequency of the received signal from a radar system. (C) 2020 Optical Society of America
引用
收藏
页码：1808 / 1816
页数：9
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