High-frequency strain measurements using a laser diode with a fiber Bragg grating external reflector

Shai Berger; Myo Myint Ohn; Shang Yuan Huang; A. Tino Alavie; Raymond M. Measures

doi:10.1117/12.255359

25 October 1996 High-frequency strain measurements using a laser diode with a fiber Bragg grating external reflector

Shai Berger, Myo Myint Ohn, Shang Yuan Huang, A. Tino Alavie, Raymond M. Measures

Proceedings Volume 2839, Fiber Optic and Laser Sensors XIV; (1996) https://doi.org/10.1117/12.255359
Event: SPIE's 1996 International Symposium on Optical Science, Engineering, and Instrumentation, 1996, Denver, CO, United States

Abstract

A technique for detection of high-frequency strain using an AR-coated laser diode with a fiber Bragg grating to form a short (approximately 1 cm) external cavity is reported. The laser system becomes a single mode, narrow-linewidth (30 MHz) source under the influence of the grating's feedback. An interferometric detection technique was used to demodulate the strain signals generated by a piezoelectric transducer into a steel block. The sensing system was able to detect frequency components up to 140 kHz.

Citation Download Citation

Shai Berger, Myo Myint Ohn, Shang Yuan Huang, A. Tino Alavie, and Raymond M. Measures "High-frequency strain measurements using a laser diode with a fiber Bragg grating external reflector", Proc. SPIE 2839, Fiber Optic and Laser Sensors XIV, (25 October 1996); https://doi.org/10.1117/12.255359

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