Author(s): Li, HC (Li, Huicong); Zhang, WT (Zhang, Wentao); Zhang, JX (Zhang, Jianxiang); Huang, WZ (Huang, Wenzhu)

Source: OPTICS EXPRESS Volume: 30 Issue: 4 Pages: 5585-5595 DOI: 10.1364/OE.448132 Published: FEB 14 2022

Abstract: Jerk is directly related to a physical mutation process of structural damage and human comfort. A fiber optic jerk sensor (FOJS) based on a fiber optic differentiating Mach-Zehnder interferometer is proposed. It can directly measure jerk by demodulating the phase of interference light, which avoids the high-frequency noise interference caused by differentiating the acceleration. The sensing theory and sensor design are given in detail. The experimental and theoretical results agree, demonstrating that the FOJS has a high sensitivity, an ultralow phase noise floor, a wide measuring range, and good linearity. The impact test shows that the FOJS can directly measure jerk and has good consistency with a standard piezoelectric accelerometer. The FOJS has potential applications in earthquake engineering, comfort evaluations, and railway design. This is the first time that directly measuring jerk with an optical sensor is reported. (C) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Accession Number: WOS:000754931700076

PubMed ID: 35209517

Author Identifiers:

Author Web of Science ResearcherID ORCID Number

zhang, jian xiang 0000-0001-5398-9068

ISSN: 1094-4087

Full Text: https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-4-5585&id=469234