Resonance Fiber Bragg Grating Sensor system based on Fourier Domain Mode-locking Laser
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Byeong Kwon Choi, Min Yong Jeon
2012 Korean Journal of Optics and Photonics  
We report a resonance fiber Bragg sensor interrogation based on a Fourier domain mode-locking (FDML) laser. The FDML laser is constructed based on a conventional ring laser cavity configuration with fiber Fabry-Perot tunable filter (FFP-TF). There are two sensor parts which are composed with two FBGs inside the laser cavity. Each sensor part provides a separate laser cavity for the FDML laser. The resonance frequencies of the laser cavities are 46.687 kHz and 44.340 kHz, respectively. We
more » ... a static and a dynamic strain on the FBG sensor system. The slope coefficients of the measured relative wavelength shift and relative time interval from the static strain are found to be 0.61  and 0.8 , respectively.
doi:10.3807/kjop.2012.23.5.211 fatcat:es2la3eb6jflrmx3n47wop4fb4