An ultra-high sensitivity methane gas sensor based on Vernier effect in two parallel optical fiber Sagnac loops

Liu, Chaoyi1,2; Chen, Hailiang1,2; Chen, Qiang1,2; Zheng, Yu3; Gao, Zhigang1,2; Fan, Xiaoya1,2; Wu, Biao1,2; Shum, Perry Ping3

2023-08-01

10.1016/j.optcom.2023.129509

OPTICS COMMUNICATIONS   影响因子和分区

0030-4018

1873-0310

Methane gas sensing has attracted great interest for its applications in agriculture production, industrial manufacturing, medical diagnosis, and environmental monitoring. In this paper, we proposed an ultra-high sensitivity methane gas sensor based on Vernier effect in two parallel optical fiber Sagnac loops. The reference arm contained a polarization maintaining photonic crystal fiber (PM-PCF), while sensing arm consists of a methane gas sensitive film coated PM-PCF. Vernier effect (VE) was generated and as a result the sensitivity was improved by multiple times. The finite element method (FEM) was used to assess the methane gas sensor's sensing capabilities. According to the numerical simulation, the average sensitivity based on two parallel Sagnac loops in the methane gas concentration of 0-3.5% was 197.775 nm/%, which was 5.5 times in contrast to a single Sagnac loop. To our best knowledge, we presented the methane gas sensor based on VE in two parallel optical fiber Sagnac loops for the first time. The designed optical fiber methane gas sensor possessed the merits of ultra-high sensitivity, providing helpful guidelines for the fabrication of high-performance methane gas sensors.

Methane gas sensor Sagnac interference Vernier effect

SCI ; EI

英语

其他

Natural Science Foundation of Hebei Province, China[F2021203112] ; National Natural Science Foundation of China[12074331] ; National Key Re-search and Development Project, China[2019YFB2204001] ; Yangtze Optical Fiber and Cable Joint Stock Limited Company, China[x2022084]

Optics

Optics

WOS:000988771400001

ELSEVIER

20231713948791

Gas detectors ; Gases ; Methane ; Optical fiber fabrication ; Photonic crystal fibers

Medicine and Pharmacology:461.6 ; Fiber Optics:741.1.2 ; Organic Compounds:804.1 ; Accidents and Accident Prevention:914.1 ; Special Purpose Instruments:943.3 ; Materials Science:951

PHYSICS

Web of Science

1.Yanshan Univ, State Key Lab Metastable Mat Sci & Technolog, Qinhuangdao 066004, Peoples R China
2.Yanshan Univ, Sch Sci, Key Lab Microstruct Mat Phys Hebei Prov, Qinhuangdao 066004, Peoples R China
3.Southern Univ Sci & Technol, Dept Elect & Elect Engn, Shenzhen 518055, Peoples R China

Liu, Chaoyi,Chen, Hailiang,Chen, Qiang,et al. An ultra-high sensitivity methane gas sensor based on Vernier effect in two parallel optical fiber Sagnac loops[J]. OPTICS COMMUNICATIONS,2023,540.

Liu, Chaoyi.,Chen, Hailiang.,Chen, Qiang.,Zheng, Yu.,Gao, Zhigang.,...&Shum, Perry Ping.(2023).An ultra-high sensitivity methane gas sensor based on Vernier effect in two parallel optical fiber Sagnac loops.OPTICS COMMUNICATIONS,540.

Liu, Chaoyi,et al."An ultra-high sensitivity methane gas sensor based on Vernier effect in two parallel optical fiber Sagnac loops".OPTICS COMMUNICATIONS 540(2023).