High sensitive TFBG sensing demodulation scheme based on microwave photonic interrogation

Fuduo Ji; Jingjing Hu; Yiying Gu; Yang Zhang; Jiali Zhang; Mingshan Zhao

doi:10.1117/12.2656279

9 January 2023 High sensitive TFBG sensing demodulation scheme based on microwave photonic interrogation

Fuduo Ji, Jingjing Hu, Yiying Gu, Yang Zhang, Jiali Zhang, Mingshan Zhao

Proceedings Volume 12507, Advanced Optical Manufacturing Technologies and Applications 2022; and 2nd International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2022); 1250722 (2023) https://doi.org/10.1117/12.2656279
Event: 2nd International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2022), 2022, Changchun, China

Abstract

In this paper, we propose and demonstrate a novel Tilted Fiber Bragg grating (TFBG) sensing demodulation scheme based on microwave photonic technique. In the proposed approach, the optical power spectrum from BBS (Broadband source) is shaped by a TFBG and then sent to a dispersive element to perform the linear wavelength-to-time mapping. A nonuniform microwave photonic filter with the center frequency depending on the shaped optical spectrum is obtained at the output of a high-speed photodetector. The central frequency and the envelope of the generated microwave photonic filter will shift according to the change of environment. Theory and a proof-of-principle experiment are implemented to verify the proposed approach.

Citation Download Citation

Fuduo Ji, Jingjing Hu, Yiying Gu, Yang Zhang, Jiali Zhang, and Mingshan Zhao "High sensitive TFBG sensing demodulation scheme based on microwave photonic interrogation", Proc. SPIE 12507, Advanced Optical Manufacturing Technologies and Applications 2022; and 2nd International Forum of Young Scientists on Advanced Optical Manufacturing (AOMTA and YSAOM 2022), 1250722 (9 January 2023); https://doi.org/10.1117/12.2656279

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