Abstract

A method for signal reconstruction in a fiber-optic sensor based on a Fabry–Perot interferometer, which uses two channels with different wavelengths that are selected such that the phase shift of the signals in these channels is π/2, is proposed. Examples of the applicability of the method for reconstructing signals in acoustic and vibration sensors are given. A significant increase in the dynamic range of recordable displacements in such sensors is obtained using the proposed method, compared with the single-wave version.

© 2018 Optical Society of America

All-glass extrinsic Fabry–Perot interferometer thermo-optic coefficient sensor based on a capillary bridged two fiber ends

Zhitao Cao, Lan Jiang, Sumei Wang, Mengmeng Wang, Da Liu, Peng Wang, Fei Zhang, and Yongfeng Lu
Appl. Opt. 54(9) 2371-2375 (2015)

Two-dimensional displacement (bending) sensor based on cascaded Fabry–Perot interferometers fabricated in a seven-core fiber

Aoao Yang, Weijia Bao, Fengyi Chen, Xingyong Li, Ruohui Wang, Yiping Wang, and Xueguang Qiao
Opt. Express 31(5) 7753-7763 (2023)

Parallel demodulation system and signal-processing method for extrinsic Fabry–Perot interferometer and fiber Bragg grating sensors

Junfeng Jiang, Tiegen Liu, Yimo Zhang, Lina Liu, Ying Zha, Fan Zhang, Yunxin Wang, and Pin Long
Opt. Lett. 30(6) 604-606 (2005)

Frequency-estimation-based signal-processing algorithm for white-light optical fiber Fabry–Perot interferometers

Fabin Shen and Anbo Wang
Appl. Opt. 44(25) 5206-5214 (2005)

All-fiber vibration sensor based on a Fabry–Perot interferometer and a microstructure beam

Qiang Zhang, Tao Zhu, Yusong Hou, and Kin Seng Chiang
J. Opt. Soc. Am. B 30(5) 1211-1215 (2013)