Optical Instruments, Volume. 45, Issue 4, 80(2023)
Degsin of open-loop photonic crystal fiber chemical sensor
In order to improve the sensitivity of low refraction chemical monitoring, a surface plasmon resonance sensor based on photonic crystal fiber with gold film in open loop was designed in this paper. The effects of open-loop radius, pore size and thickness of metal film on the sensitivity of the sensor were studied systematically by using COMSOL Multiphysics 5.6. Finally, a low refractive index sensor with a refractive index detection range of 1.26-1.31 was designed in the working band of 2 800-4 700 nm. The average sensitivity of the sensor is as high as 22 500 nm/RIU, and the highest sensitivity is 33 000 nm/RIU. It has a good application prospect in the detection of low refractive index substances such as sevoflurane, haloether and fluorine-containing organic compounds.
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Ziyi ZHU, Min CHANG, Wanlin MO, Xuejing LIU. Degsin of open-loop photonic crystal fiber chemical sensor[J]. Optical Instruments, 2023, 45(4): 80
Category: DESIGN AND RESEARCH
Received: Aug. 20, 2022
Accepted: Aug. 20, 2022
Published Online: Sep. 26, 2023
The Author Email: CHANG Min (changmin@usst.edu.cn)