Quasi-distributed fiber sensor using active mode locking laser cavity with multiple FBG reflections

Chang Hyun Park; Gyeong Hun Kim; Chang-Seok Kim; Hwi Don Lee; Youngjoo Chung

doi:10.1117/12.2267642

23 April 2017 Quasi-distributed fiber sensor using active mode locking laser cavity with multiple FBG reflections

Chang Hyun Park, Gyeong Hun Kim, Chang-Seok Kim, Hwi Don Lee, Youngjoo Chung

Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103235M (2017) https://doi.org/10.1117/12.2267642
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of

Abstract

We have demonstrated a quasi-distributed sensor using an active mode-locking (AML) laser with multiple fiber Bragg grating (FBG) reflections of the same center wavelength. We found that variations in the multiple cavity segment lengths between FBGs can be measured by simply sweeping the modulation frequency, because the modulation frequency of the AML laser is proportionally affected by cavity length.

Citation Download Citation

Chang Hyun Park, Gyeong Hun Kim, Chang-Seok Kim, Hwi Don Lee, and Youngjoo Chung "Quasi-distributed fiber sensor using active mode locking laser cavity with multiple FBG reflections", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103235M (23 April 2017); https://doi.org/10.1117/12.2267642

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