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Proceedings Paper

Multiplexed sub-nano resolution quasi-static strain sensor based on transient response of Fabry-Perot interferometers
Author(s): Jiageng Chen; Qingwen Liu; Zuyuan He
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Paper Abstract

We present a multiplexed quasi-static strain sensor with sub-nano resolution using fiber Fabry-Perot interferometers (FFPIs). The FFPIs are connected in ladder structure with cascaded couplers and delay fibers for multiplexing, and their transient response excited by laser pulses are acquired to distinguish the resonant frequencies of each FFPI. An electro-optical system based on acousto-optic modulator is employed to interrogate the sensor array. In the demonstrational experiment, 3-channel strain measurement with resolutions better than 0.2 nε/Hz1/2 in frequency band from 0.1 Hz to 100 Hz is realized.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032353 (23 April 2017); doi: 10.1117/12.2267101
Show Author Affiliations
Jiageng Chen, Shanghai Jiao Tong Univ. (China)
Qingwen Liu, Shanghai Jiao Tong Univ. (China)
Zuyuan He, Shanghai Jiao Tong Univ. (China)


Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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