Simultaneous measurement of refractive index and temperature based on bent core-offset in-line fiber Mach-Zehnder interferometer

Bingcheng Wu; Haiyang Bao; Yanfei Zhou; Yuan Liu; Jie Zheng

doi:10.1117/12.2601197

9 October 2021 Simultaneous measurement of refractive index and temperature based on bent core-offset in-line fiber Mach-Zehnder interferometer

Bingcheng Wu, Haiyang Bao, Yanfei Zhou, Yuan Liu, Jie Zheng

Author Affiliations +

Proceedings Volume 11901, Advanced Sensor Systems and Applications XI; 119010G (2021) https://doi.org/10.1117/12.2601197
Event: SPIE/COS Photonics Asia, 2021, Nantong, JS, China

Abstract

A bent core-offset in-line ﬁber Mach-Zehnder interferometer (MZIs) is proposed for refractive index (RI) sensing. After simply bending, not only the RI sensitivity but also the temperature sensitivity can be enhanced as the bending radius decreases. To solve the cross-sensitivity problem, a simultaneous measurement of RI and temperature was carried out. When the bending radius is 35.64mm, the highest RI sensitivity of -44.55nm/RIU for the RI range from 1.333 to 1.373, and the highest temperature sensitivity of 0.0799nm/℃ for the temperature range from 25℃ to 60℃ were measured simultaneously.

Conference Presentation

Citation Download Citation

Bingcheng Wu, Haiyang Bao, Yanfei Zhou, Yuan Liu, and Jie Zheng "Simultaneous measurement of refractive index and temperature based on bent core-offset in-line fiber Mach-Zehnder interferometer", Proc. SPIE 11901, Advanced Sensor Systems and Applications XI, 119010G (9 October 2021); https://doi.org/10.1117/12.2601197

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