High sensitivity side-polished multimode fiber based refractometer

Huanbiao Gan; Hongbo Gan; Jun Zhang; Zhe Chen; Jieyuan Tang; Yunhan Luo; Jianhui Yu; Zhigang Zang; Huihui Lu

doi:10.1117/12.2059724

2 June 2014 High sensitivity side-polished multimode fiber based refractometer

Huanbiao Gan, Hongbo Gan, Jun Zhang, Zhe Chen, Jieyuan Tang, Yunhan Luo, Jianhui Yu, Zhigang Zang, Huihui Lu

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 91571W (2014) https://doi.org/10.1117/12.2059724
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We have investigated the influence of side-polished multimode fiber (SPMMF) core diameters D and residual radius R (the minimum distance between side-polished surface and the center of multimode fiber) on the sensitivity of a SPMMF based refractometer. We show that the residual radius has significant influence on the refractive index (RI) sensitivity but the core diameter does not. A refractometer with a lower SPMMF core diameter has a higher sensitivity. Experimental investigations achieved a maximum sensitivity of 42.23 dB/RIU (refractive index unit) for a refractive index range from 1.300 to 1.440 for a refractometer with a SPMMF core diameter of 50 μm.

Citation Download Citation

Huanbiao Gan, Hongbo Gan, Jun Zhang, Zhe Chen, Jieyuan Tang, Yunhan Luo, Jianhui Yu, Zhigang Zang, and Huihui Lu "High sensitivity side-polished multimode fiber based refractometer ", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 91571W (2 June 2014); https://doi.org/10.1117/12.2059724

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