Hydrogen sensor based on a fiber optic F-P interferometer with a fiber Bragg grating and a nanofilm

Junxian Luo; Shen Liu; Yiping Wang

doi:10.1117/12.2604535

1 November 2021 Hydrogen sensor based on a fiber optic F-P interferometer with a fiber Bragg grating and a nanofilm

Junxian Luo, Shen Liu, Yiping Wang

Proceedings Volume 12057, Twelfth International Conference on Information Optics and Photonics; 120570Z (2021) https://doi.org/10.1117/12.2604535
Event: Twelfth International Conference on Information Optics and Photonics, 2021, Xi'an, China

Abstract

We present a novel fiber optic hydrogen sensor with fast response fabricated from a graphene-Au-Pd sandwich nano film and an ultrashort fiber Bragg grating. The response time is only 4.3 s at a 3.5 vol% hydrogen concentration. When the measured hydrogen concentration was increased from 0 to 4.5 vol%, the optical resonance dip in the sensor at near 1550 nm shifted by 290 pm. In addition, the sensor has an insertion loss of only −2.22 dB, spectral contrast of 10.8 dB, and spectral finesse of 5.

Citation Download Citation

Junxian Luo, Shen Liu, and Yiping Wang "Hydrogen sensor based on a fiber optic F-P interferometer with a fiber Bragg grating and a nanofilm", Proc. SPIE 12057, Twelfth International Conference on Information Optics and Photonics, 120570Z (1 November 2021); https://doi.org/10.1117/12.2604535

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