Fiber Bragg grating strain sensor interrogation with 1.3 &#956;m Fourier domain mode-locked wavelength swept laser

Byoung Chang Lee; Min Hyun Oh; Min Yong Jeon; Eun Joo Jung; Chang-seok Kim

doi:10.1117/12.835227

5 October 2009 Fiber Bragg grating strain sensor interrogation with 1.3 μm Fourier domain mode-locked wavelength swept laser

Byoung Chang Lee, Min Hyun Oh, Min Yong Jeon, Eun Joo Jung, Chang-seok Kim

Author Affiliations +

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75035F (2009) https://doi.org/10.1117/12.835227
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

We demonstrate a high speed fiber Bragg grating sensor array interrogation using 1.3 μm Fourier-domain modelocked (FDML) wavelength-swept laser. The slope coefficients for measured relative wavelength difference and relative time delay from the static strain are 1.02 pm/μstrain and 0.16 ns/μstrain, respectively. We demonstrate the dynamic response of the FBG sensor array with 100 Hz modulation strain based on the FDML wavelength swept laser at 25.3 kHz scanning rate. The FBG sensor interrogation system using FDML wavelength swept laser can be realized for the high speed and high sensitivity monitoring systems.

Citation Download Citation

Byoung Chang Lee, Min Hyun Oh, Min Yong Jeon, Eun Joo Jung, and Chang-seok Kim "Fiber Bragg grating strain sensor interrogation with 1.3 μm Fourier domain mode-locked wavelength swept laser", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75035F (5 October 2009); https://doi.org/10.1117/12.835227

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