Back to Search Start Over

Photonic-assisted multiple microwave frequency measurement with improved robustness

Authors :
Guodong Wang
Qingqing Meng
Yong Jun Li
Xuan Li
Yixiao Zhou
Zihang Zhu
Congrui Gao
He Li
Shanghong Zhao
Source :
Optics Letters. 48:1172
Publication Year :
2023
Publisher :
Optica Publishing Group, 2023.

Abstract

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.

Details

ISSN :
15394794 and 01469592
Volume :
48
Database :
OpenAIRE
Journal :
Optics Letters
Accession number :
edsair.doi...........e211da5884605fac6557b539e384b2a3