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http://hdl.handle.net/10397/95557
Title: | Simultaneous measurement of axial strain and lateral stress based on cascaded interference structure | Authors: | Li, Y Liu, Z Liu, Y Yu, C |
Issue Date: | 28-Mar-2022 | Source: | Optics express, 28 Mar. 2022, v. 30, no. 7, p. 10942-10952 | Abstract: | To solve the cross-sensitivity problem in the dual-parameter optical fiber system, a new type of sensor based on cascaded interference structure is proposed without cross-sensitivity. The design consists of a Michelson interferometer and a Sagnac interferometer based on a high-birefringence suspended core fiber segment. After calculating by the analogous Fast Fourier Transformation (FFT) and filtering by FFT filter, the spectrum of the sensor responds linearly to the change of axial strain and lateral stress. The sensitivity to lateral stress is 3.13 nm/(kPa) in the range from 0 to 1200 Pa and the axial strain is 1.846e-4 (nm μϵ)-1 from 0 to 4000 μϵ. The capability of the proposed sensor for dual-parameter sensing is also experimentally demonstrated. The precision rate for dual-parameter sensing is as high as 66.7%, reflecting the sensor's usability for simultaneous measurement of axial strain and lateral stress. | Publisher: | Optical Society of America | Journal: | Optics express | EISSN: | 1094-4087 | DOI: | 10.1364/OE.452783 | Rights: | © 2022 Optica Publishing Group under the terms of the Open Access Publishing Agreement (https://opg.optica.org/library/license_v2.cfm#VOR-OA). Users may use, reuse, and build upon the article, or use the article for text or data mining, so long as such uses are for non-commercial purposes and appropriate attribution is maintained. All other rights are reserved. The following publication Yujian Li, Zhengyong Liu, Yifan Liu, and Changyuan Yu, "Simultaneous measurement of axial strain and lateral stress based on cascaded interference structure," Opt. Express 30, 10942-10952 (2022) is available at https://doi.org/10.1364/OE.452783. |
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