Refractive index insensitive curvature sensor based on cladding-mode resonance of specialty triple-clad fiber

Xinghu Fu; Haiyang Xie; Guangwei Fu; Qiang Liu; Weihong Bi

doi:10.1117/12.2199784

8 October 2015 Refractive index insensitive curvature sensor based on cladding-mode resonance of specialty triple-clad fiber

Xinghu Fu, Haiyang Xie, Guangwei Fu, Qiang Liu, Weihong Bi

Author Affiliations +

Proceedings Volume 9679, AOPC 2015: Optical Fiber Sensors and Applications; 96790U (2015) https://doi.org/10.1117/12.2199784
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

A refractive index insensitive curvature sensor based on cladding-mode resonance of specialty triple-clad fiber (STCF) is proposed. The corresponding mode properties of STCF are investigated theoretically based on the coupled mode theory. The different mode dispersion curves are calculated and a resonance wavelength is obtained. A straightforward experiment is performed to prove the curvature sensitivity. Experimental results shows that the curvature sensitivity can be achieve -11.03374nm/m^-1 in the range of 0~1.17m^-1, and it also has good linearity. This curvature sensor has the advantages of simple structure, easy manufacturing, highly sensitivity and has no cross-sensitivity when it compared to the other sensors. Thus it can be used for curvature monitoring in time.

Citation Download Citation

Xinghu Fu, Haiyang Xie, Guangwei Fu, Qiang Liu, and Weihong Bi "Refractive index insensitive curvature sensor based on cladding-mode resonance of specialty triple-clad fiber", Proc. SPIE 9679, AOPC 2015: Optical Fiber Sensors and Applications, 96790U (8 October 2015); https://doi.org/10.1117/12.2199784

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