Instantaneous microwave frequency measurement using a phase modulator and Gaussian filter based on photonic differentiator

Wenqi Yu; Xiaodong Liang; Guansu Xing; Yu Liang; Lei Zhang; Dongjie Wang; Yandan Liu; Xin Liu; Wanli Yang; Xiang Ma

doi:10.1117/12.2649448

14 October 2022 Instantaneous microwave frequency measurement using a phase modulator and Gaussian filter based on photonic differentiator

Wenqi Yu, Xiaodong Liang, Guansu Xing, Yu Liang, Lei Zhang, Dongjie Wang, Yandan Liu, Xin Liu, Wanli Yang, Xiang Ma

Author Affiliations +

Proceedings Volume 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022); 1234324 (2022) https://doi.org/10.1117/12.2649448
Event: 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 2022, Qingdao, China

Abstract

A differentiator-based photonic approach for the instantaneous microwave frequency measurement (IFM) using a phase modulator and an optical Gaussian filter is proposed and experimentally demonstrated. A microwave frequency measurement with high resolution is achieved by a monotonous frequency-to-power mapping obtained by differential operation in optical domain. A proof-of-concept experiment has been performed, in which a measurement error less than ±0.1 GHz over the frequency range 0.1-10 GHz with input power of 0 dBm is demonstrated. The measurement error of the IFM system is still less than ±0.24 GHz, even though input signal power decreases to -30 dBm. The approach suggests a potential capacity for integrated IFM by using all-optical computing.

Citation Download Citation

Wenqi Yu, Xiaodong Liang, Guansu Xing, Yu Liang, Lei Zhang, Dongjie Wang, Yandan Liu, Xin Liu, Wanli Yang, and Xiang Ma "Instantaneous microwave frequency measurement using a phase modulator and Gaussian filter based on photonic differentiator", Proc. SPIE 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 1234324 (14 October 2022); https://doi.org/10.1117/12.2649448

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