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Fiber-ring laser sensor system using a fiber Fabry-Pérot filter for ultrasound detection
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Paper Abstract

We propose and experimentally demonstrate a multiplexing methodology for ultrasonic sensors based on fiber Bragg gratings (FBGs) that are included in the laser cavity of a semiconductor optical amplifier (SOA)-based fiber-ring laser system coupled with a fiber Fabry-Pérot (FFP) filter. The fiber ring laser (FRL) consists of an SOA as a gain medium and of FBGs as wavelength selection elements. We experimentally fabricate a dual-wavelength fiber ring laser and confirm stable oscillation outputs of the laser source. And ultrasonic signals generated from the piezoelectric transducers (PZTs) source are successfully detected. Such a multiplexed fiber-optic ultrasonic sensor system may be used for acoustic emission (AE) detection for structural health monitoring (SHM).

Paper Details

Date Published: 27 March 2019
PDF: 8 pages
Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 109702T (27 March 2019); doi: 10.1117/12.2514215
Show Author Affiliations
Liming Mao, Chongqing Univ. of Technology (China)
Chuanyi Tao, Chongqing Univ. of Technology (China)
Jingke Li, Chongqing Medical and Pharmaceutical College (China)
Xuhai Jiang, Chongqing Univ. of Technology (China)
Junhua Cheng, Chongqing Univ. of Technology (China)
Jing Zhang, Chongqing Univ. of Technology (China)


Published in SPIE Proceedings Vol. 10970:
Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019
Jerome P. Lynch; Haiying Huang; Hoon Sohn; Kon-Well Wang, Editor(s)

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