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

Liming Mao; Chuanyi Tao; Jingke Li; Xuhai Jiang; Junhua Cheng; Jing Zhang

doi:10.1117/12.2514215

27 March 2019 Fiber-ring laser sensor system using a fiber Fabry-Pérot filter for ultrasound detection

Liming Mao, Chuanyi Tao, Jingke Li, Xuhai Jiang, Junhua Cheng, Jing Zhang

Proceedings Volume 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019; 109702T (2019) https://doi.org/10.1117/12.2514215
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States

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).

Citation Download Citation

Liming Mao, Chuanyi Tao, Jingke Li, Xuhai Jiang, Junhua Cheng, and Jing Zhang "Fiber-ring laser sensor system using a fiber Fabry-Pérot filter for ultrasound detection", Proc. SPIE 10970, Sensors and Smart Structures Technologies for Civil, Mechanical, and Aerospace Systems 2019, 109702T (27 March 2019); https://doi.org/10.1117/12.2514215

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