High speed TFBG-SPR sensing demodulation system based on microwave photonics interrogation

Cao, Yuan; Wang, Guangying; Zhang, Xuejun; Kong, Youxue; Wang, Xudong; Yao, Jianping; Guo, Tuan; Feng, Xinhuan; Guan, Bai‐Ou

doi:10.1117/12.2523905

Cited by 1 publication

(2 citation statements)

References 8 publications

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“…On the other hand, the microwave photonic technology is famous for provide a practical method to process high frequency and large bandwidth signals in microwave domain [2] . Therefore, microwave photonic interrogation has become a promising candidate for improving the performance of optical sensors [3][4][5] . A high-speed and high-resolution refractive index (RI) sensor based on a tilted fiber Bragg grating with surface plasmon resonance (TFBG-SPR) is proposed and experimentally demonstrated in paper [3] .…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, microwave photonic interrogation has become a promising candidate for improving the performance of optical sensors [3][4][5] . A high-speed and high-resolution refractive index (RI) sensor based on a tilted fiber Bragg grating with surface plasmon resonance (TFBG-SPR) is proposed and experimentally demonstrated in paper [3] . A high-speed frequency swept laser source is used to generate frequency-chirped optical pulse which is applied to an Au-coated TFBG.…”

Section: Introductionmentioning

confidence: 99%

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High sensitive TFBG sensing demodulation scheme based on microwave photonic interrogation

Hu²,

Gu³

et al. 2023

Advanced Optical Manufacturing Technologies and Applications 2022; And 2nd International Forum of Young Scientists on Advanced

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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.

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