Photonic-assisted multiple microwave frequency measurement with improved robustness

被引：13

作者：

Wang, Guodong ^{[1
]}

Meng, Qingqing ^{[1
]}

Li, Yong Jun ^{[1
]}

Li, Xuan ^{[1
]}

Zhou, Yixiao ^{[1
]}

Zhu, Zihang ^{[1
]}

Gao, Congrui ^{[1
]}

Li, He ^{[1
]}

Zhao, Shanghong ^{[1
]}

机构：

[1] Air Force Engn Univ, Coll Informat & Nav, Xian 710077, Peoples R China

来源：

OPTICS LETTERS | 2023年 / 48卷 / 05期

基金：

中国国家自然科学基金;

关键词：

IDENTIFICATION;

D O I：

10.1364/OL.483392

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A multiple microwave frequency measurement approach based on frequency-to-time mapping (FTTM) is reported. The FTTM is constructed by optical sideband sweeping and electric-domain intermediate frequency envelope monitoring. Two optimized operations are implemented. First, the use of balanced photodetection cancels out the beat components generated by the signals under test (SUT) themselves, so as to exclude frequency misjudgment. Second, a reference signal is introduced to map the SUT frequency to a relative time difference instead of an absolute time value, avoiding the measuring bias caused by time synchronization. As a result, the proposed scheme with improved robustness could be attractive for future practical applications. An experiment is performed. Microwave frequency measurement from 16 to 26 GHz is demonstrated, with an average error of 7.53 MHz.(c) 2023 Optica Publishing Group

引用

页码：1172 / 1175

页数：4