An acoustic vibration sensor based on tapered triple cladding fiber

Hui Xu; Fufei Pang; Shiqi Zhao; Zhenyi Chen; Tingyun Wang

doi:10.1117/12.2054843

2 June 2014 An acoustic vibration sensor based on tapered triple cladding fiber

Hui Xu, Fufei Pang, Shiqi Zhao, Zhenyi Chen, Tingyun Wang

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 9157A8 (2014) https://doi.org/10.1117/12.2054843
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

An acoustic vibration sensor is investigated and demonstrated by using a tapered triple cladding fiber (TCF). It is fabricated by tapering a length of 2 cm TCF which is spliced between two single mode fibers (SMF). The TCF consists of core, inner cladding, middle cladding and outer cladding. After the tapering process, this structure becomes a tapered coaxial fiber coupler which presents a periodic filtering transmission spectrum. The surrounding vibration perturbation can be directly demodulated by intensity detection of the transmission power at a particular wavelength. The experimental result shows that the maximum frequency response of 700 kHz is achieved.

Citation Download Citation

Hui Xu, Fufei Pang, Shiqi Zhao, Zhenyi Chen, and Tingyun Wang "An acoustic vibration sensor based on tapered triple cladding fiber", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 9157A8 (2 June 2014); https://doi.org/10.1117/12.2054843

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