Development of four-channel hydrogen sensor based on stimulate Raman spectroscopy

Shuzhi Yao; Meng Zhang; Hui Gao; Yufei Zhang; Junyang Liu; Yong Yang; Xuefeng Wang

doi:10.1117/12.3008154

18 December 2023 Development of four-channel hydrogen sensor based on stimulate Raman spectroscopy

Shuzhi Yao, Meng Zhang, Hui Gao, Yufei Zhang, Junyang Liu, Yong Yang, Xuefeng Wang

Proceedings Volume 12968, AOPC 2023: Optic Fiber Gyro ; 1296826 (2023) https://doi.org/10.1117/12.3008154
Event: Applied Optics and Photonics China 2023 (AOPC2023), 2023, Beijing, China

Abstract

Hydrogen has a wide range of applications in various industries, including fuel cells, chemical processing, and electronics. However, hydrogen is highly flammable and explosive at a wide concentration range (4%~75%), which poses a significant safety concern. Hydrogen sensors with higher sensitivity, better selectivity, faster response, and wider dynamic range are of increasing importance in connection with the development. In this paper, a scheme of four-channel hydrogen sensor is proposed which is based on stimulated Raman spectroscopy and nanofiber. The tightly confined evanescent field associated with the nanofiber enhances the Raman gain per unit length by a factor of more than 104 over free-space beams. Time division multiplexing technology is used to implement multichannel detection. The whole sensing system consists of commercial optical modules such as DFB laser, EDFA and optical switch, and several homemade circuits instead of the commercial instruments for signal processing and controlling channel switching. Every channel can connect one probe which is based on nanofiber and packaged by special metal structure and method. The switching time can be millisecond order so that the signal period would not be influenced. The four-channel hydrogen sensor is realized in the experiment that demonstrates hydrogen detection from hundreds parts per million to 100% with each channel. The reported sensor could be used in the field of new energy, electric power and aerospace for detection of hydrogen leakage or monitoring of transformer health conditions with advantages of low cost, compact size and high resolution.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Shuzhi Yao, Meng Zhang, Hui Gao, Yufei Zhang, Junyang Liu, Yong Yang, and Xuefeng Wang "Development of four-channel hydrogen sensor based on stimulate Raman spectroscopy", Proc. SPIE 12968, AOPC 2023: Optic Fiber Gyro , 1296826 (18 December 2023); https://doi.org/10.1117/12.3008154

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KEYWORDS

Hydrogen

Raman spectroscopy

Sensors

Nanofibers

Optical switching

Circuit switching

Spectroscopy

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