High sensitivity strain sensor based on cascaded cladding mode resonant double-clad fiber and simple mode fiber

Xinghu Fu; Dong Wang; Fan Liu; Jing Wen; Guangwei Fu; Weihong Bi

doi:10.1117/12.2295460

10 January 2018 High sensitivity strain sensor based on cascaded cladding mode resonant double-clad fiber and simple mode fiber

Xinghu Fu, Dong Wang, Fan Liu, Jing Wen, Guangwei Fu, Weihong Bi

Author Affiliations +

Proceedings Volume 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications; 106180L (2018) https://doi.org/10.1117/12.2295460
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

A high sensitivity strain sensor based on cascaded cladding mode resonant double-clad fiber (DCF) and simple mode fiber is proposed. The basic principle of the sensor is analyzed, and the preparation of the sensor is performed. In different length of double-clad fiber, the strain sensing characteristics are analyzed detailedly. Experimental results show that, as the length of the connected double-clad fiber increases, the trough of the resonant spectrum will gradually increase. That is, the length of the access DCF is inversely proportional to the free spectral range. With the increase of tensile force, the resonance spectrum is blue shift, and the tension sensitivity can be up to -1.87nm/mε.

Citation Download Citation

Xinghu Fu, Dong Wang, Fan Liu, Jing Wen, Guangwei Fu, and Weihong Bi "High sensitivity strain sensor based on cascaded cladding mode resonant double-clad fiber and simple mode fiber", Proc. SPIE 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications, 106180L (10 January 2018); https://doi.org/10.1117/12.2295460

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