6 August 2001 FMCW reflectometric optical fiber strain sensor
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This paper describes a quasi-distributed optical fiber strain sensor whose principle of operation is based on the coherent frequency-modulated continuous-wave reflectometry technique. The sensing system is basically composed of a laser diode, which is frequency-swept by a triangle waveform injection current, and an unbalanced two-beam interferometer.
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Pei Chin Won, Pei Chin Won, Leong Keey Seah, Leong Keey Seah, Anand Krishna Asundi, Anand Krishna Asundi, } "FMCW reflectometric optical fiber strain sensor", Proc. SPIE 4328, Smart Structures and Materials 2001: Sensory Phenomena and Measurement Instrumentation for Smart Structures and Materials, (6 August 2001); doi: 10.1117/12.435539; https://doi.org/10.1117/12.435539

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