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Proceedings Paper

Fresnel-reflection-based fiber optic cryogenic temperature sensor
Author(s): Umesh Sampath; Dae-gil Kim; Hyunjin Kim; Minho Song
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Paper Abstract

In this paper, Fresnel reflection based fiber-optic sensor for the real-time monitoring of cryogenic temperature is presented. The proposed sensor system utilizes a linear thermo-optic coefficient of polymer and Fresnel reflection of the fiber end. Epoxy resin and poly methyl metha acrylate (PMMA) are used as sensor head material. The designed sensor head measures the temperature ranging from -180°C to 25°C with an average sensitivity of 0.039dB/°C for epoxy resin and 0.029dB/°C for PMMA. Experimental results have proven the stability and the effectiveness of the proposed sensor system to measure the applied cryogenic temperatures.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103234D (23 April 2017); doi: 10.1117/12.2265591
Show Author Affiliations
Umesh Sampath, Chonbuk National Univ. (Korea, Republic of)
Dae-gil Kim, Chonbuk National Univ. (Korea, Republic of)
Hyunjin Kim, Chonbuk National Univ. (Korea, Republic of)
Minho Song, Chonbuk National Univ. (Korea, Republic of)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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