Methane and hydrogen sensor based on photonic crystal waveguide

Wen Zhang; Haoran Wang; Cancan Chen; Shoufeng Tang; Hai Liu

doi:10.1117/12.2548682

13 November 2019 Methane and hydrogen sensor based on photonic crystal waveguide

Wen Zhang, Haoran Wang, Cancan Chen, Shoufeng Tang, Hai Liu

Proceedings Volume 11343, Ninth International Symposium on Precision Mechanical Measurements; 1134315 (2019) https://doi.org/10.1117/12.2548682
Event: International Symposium on Precision Mechanical Measurements 2019, 2019, Chongqing, China

Abstract

A gas sensor is designed based on a triangular lattice air-hole photonic crystal waveguide (PCW), and the concentration of the mixed gas is measured by selectively coating a sensitive film whose refractive index changes with the gas concentration in the PCW. The transmission characteristics of light in the waveguide are studied by time domain finite element method (FDTD). The results show that the appropriate structural parameters can be selected, and the mixed gas of methane and hydrogen can be accurately measured by using two channels without interference. The sensor has compact structure and good optical properties, which provides a new idea for the detection of various gases.

Citation Download Citation

Wen Zhang, Haoran Wang, Cancan Chen, Shoufeng Tang, and Hai Liu "Methane and hydrogen sensor based on photonic crystal waveguide", Proc. SPIE 11343, Ninth International Symposium on Precision Mechanical Measurements, 1134315 (13 November 2019); https://doi.org/10.1117/12.2548682

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