Open cavity Fabry-Pérot interferometric refractometer based on C-shaped fiber

Chuang Wu; Zhengyong Liu; A. Ping Zhang; Bai-Ou Guan; Hwa-Yaw Tam

doi:10.1117/12.2059594

2 June 2014 Open cavity Fabry-Pérot interferometric refractometer based on C-shaped fiber

Chuang Wu, Zhengyong Liu, A. Ping Zhang, Bai-Ou Guan, Hwa-Yaw Tam

Author Affiliations +

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91572F (2014) https://doi.org/10.1117/12.2059594
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We demonstrated an in-line open cavity Fabry–Pérot interferometer (FPI) for liquid refractive index sensing with linear response and high sensitivity. The FPI was fabricated by splicing a short piece of C-shaped fiber (tens of micrometers) between two standard single-mode fibers. The refractive index response of the FPI was characterized by ethanol-water mixtures in the range of 1.33 to 1.36, and a high sensitivity of 1294 nm/RIU at the wavelength of 1550 nm was achieved. The sensor was used to measure the thermo-optic coefficient of pure water, and the results agree well with the literature.

Citation Download Citation

Chuang Wu, Chuang Wu, Zhengyong Liu, Zhengyong Liu, A. Ping Zhang, A. Ping Zhang, Bai-Ou Guan, Bai-Ou Guan, Hwa-Yaw Tam, Hwa-Yaw Tam, } "Open cavity Fabry-Pérot interferometric refractometer based on C-shaped fiber", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91572F (2 June 2014); doi: 10.1117/12.2059594; https://doi.org/10.1117/12.2059594

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