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Proceedings Paper

Methane and hydrogen sensor based on photonic crystal waveguide
Author(s): Wen Zhang; Haoran Wang; Cancan Chen; Shoufeng Tang; Hai Liu
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Paper 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.

Paper Details

Date Published: 13 November 2019
PDF: 5 pages
Proc. SPIE 11343, Ninth International Symposium on Precision Mechanical Measurements, 1134315 (13 November 2019); doi: 10.1117/12.2548682
Show Author Affiliations
Wen Zhang, China Univ. of Mining and Technology (China)
Haoran Wang, China Univ. of Mining and Technology (China)
Cancan Chen, China Univ. of Mining and Technology (China)
Shoufeng Tang, China Univ. of Mining and Technology (China)
Hai Liu, China Univ. of Mining and Technology (China)
Xuzhou Key Lab. of Artificial Intelligence and Big Date (China)


Published in SPIE Proceedings Vol. 11343:
Ninth International Symposium on Precision Mechanical Measurements
Liandong Yu, Editor(s)

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