Compact and high sensitivity curvature sensor based on twin core fiber coupler

Guolu Yin; Shuqin Lou; Hui Zou

doi:10.1117/12.966834

17 October 2012 Compact and high sensitivity curvature sensor based on twin core fiber coupler

Guolu Yin, Shuqin Lou, Hui Zou

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84212P (2012) https://doi.org/10.1117/12.966834
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

A compact and high sensitivity curvature sensor based on twin core fiber (TCF) coupler is proposed and demonstrated experimentally in the curvature range from 0 to 9.30 m-¹. The TCF coupler is formed by splicing a section of 86.85 mm TCF between two single mode fibers (SMFs). A nonlinear blue-shift of the wavelength was observed when increasing the curvature. In the range from 3 m^-1 to 9.30 m-¹, the minimum and maximum sensitivity are - 2.5 nm/m^-1 and - 14.7 nm/m^-1, respectively. The dynamic range can be tailored by proper selection of the TCF length and the resonance dips.

Citation Download Citation

Guolu Yin, Shuqin Lou, and Hui Zou "Compact and high sensitivity curvature sensor based on twin core fiber coupler", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84212P (17 October 2012); https://doi.org/10.1117/12.966834

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