Fiber-optic Fabry-Perot refractive-index tip sensor based on endlessly photonic crystal fiber

Ming Deng; Yunjiang Rao; Tao Zhu; Hong Li

doi:10.1117/12.835273

5 October 2009 Fiber-optic Fabry-Perot refractive-index tip sensor based on endlessly photonic crystal fiber

Ming Deng, Yunjiang Rao, Tao Zhu, Hong Li

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75035Q (2009) https://doi.org/10.1117/12.835273
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

We present a novel fiber-optic refractive-index (RI) sensor based on F-P interferometer, formed by splicing an endlessly photonic crystal fiber to a single-mode fiber. This type of RI sensor can be used to simultaneously measure RI and temperature by determination of its fringe visibility and cavity length change, respectively. The RI resolution is ~2x10^-5 in the linear range and the cavity-length-temperature sensitivity is 18.72nm/ C o from 20°C to 100°C. In addition, the RI measurement based on the fringe visibility with such a miniature in-line fiber-optic tip sensor is independent on temperature change, making it suitable for practical applications.

Citation Download Citation

Ming Deng, Yunjiang Rao, Tao Zhu, and Hong Li "Fiber-optic Fabry-Perot refractive-index tip sensor based on endlessly photonic crystal fiber", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75035Q (5 October 2009); https://doi.org/10.1117/12.835273

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