Cryogenic temperature sensor based on an optical fiber Fabry-Perot interferometer with high sensitivity

Jiahua Yang; Xiaopeng Dong; Biao Yin

doi:10.1117/12.2602265

9 October 2021 Cryogenic temperature sensor based on an optical fiber Fabry-Perot interferometer with high sensitivity

Jiahua Yang, Xiaopeng Dong, Biao Yin

Proceedings Volume 11901, Advanced Sensor Systems and Applications XI; 1190102 (2021) https://doi.org/10.1117/12.2602265
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

Different from the previously reported cryogenic temperature measurement based on the fiber Bragg grating (FBG) sensor, we propose a novel cryogenic temperature measurement scheme with a fiber interferometric sensor. The proposed sensor is constructed by the extrinsic Fabry–Perot interferometer (EFPI) which is consisted of a ceramic ferrule, a copper sleeve and two fiber ends. Under the cryogenic surrounding, the cavity length of the EFPI will change with the thermal deformation of the copper sleeve. With liquid nitrogen, the surrounding temperature can be changed from 77K to room temperature, and as high as 2.246nm/K of the temperature sensitivity can be achieved at a temperature range from 113K-153K in the experiment, with a 12.38μm EFPI cavity. The proposed interferometric sensor will still have relatively high sensitivity at a temperature lower than 77K according to our numerical simulation, so, has good application prospect in cryogenic temperature environment.

Conference Presentation

Citation Download Citation

Jiahua Yang, Xiaopeng Dong, and Biao Yin "Cryogenic temperature sensor based on an optical fiber Fabry-Perot interferometer with high sensitivity", Proc. SPIE 11901, Advanced Sensor Systems and Applications XI, 1190102 (9 October 2021); https://doi.org/10.1117/12.2602265

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