A MHz speed wavelength sweeping for ultra-high speed FBG interrogation

Gyeong Hun Kim; Hwi Don Lee; Tae Joong Eom; Myung Yung Jeong; Chang-Seok Kim

doi:10.1117/12.2195301

28 September 2015 A MHz speed wavelength sweeping for ultra-high speed FBG interrogation

Gyeong Hun Kim, Hwi Don Lee, Tae Joong Eom, Myung Yung Jeong, Chang-Seok Kim

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96345H (2015) https://doi.org/10.1117/12.2195301
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

We demonstrated a MHz speed wavelength-swept fiber laser based on the active mode locking (AML) technique and applied to interrogation system of an array of fiber Bragg grating (FBG) sensors. MHz speed wavelength sweeping of wavelength-swept fiber laser can be obtained by programmable frequency modulation of the semiconductor optical amplifier (SOA) without any wavelength tunable filter. Both static and dynamic strain measurement of FBG sensors were successfully characterized with high linearity of an R-square value of 0.9999 at sweeping speed of 50 kHz.

Citation Download Citation

Gyeong Hun Kim, Hwi Don Lee, Tae Joong Eom, Myung Yung Jeong, and Chang-Seok Kim "A MHz speed wavelength sweeping for ultra-high speed FBG interrogation", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96345H (28 September 2015); https://doi.org/10.1117/12.2195301

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