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Photonic-assisted multiple microwave frequency measurement with improved robustness
- 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.
- Subjects :
- Atomic and Molecular Physics, and Optics
Subjects
Details
- ISSN :
- 15394794 and 01469592
- Volume :
- 48
- Database :
- OpenAIRE
- Journal :
- Optics Letters
- Accession number :
- edsair.doi...........e211da5884605fac6557b539e384b2a3