Characterization of FBG sensor interrogation based on a FDML wavelength swept laser.
In this study, we develop an ultra-fast fiber Bragg grating sensor system that is based on the Fourier domain mode-locked (FDML) swept laser. A FDML wavelength swept laser has many advantages compared to the conventional wavelength swept laser source, such as high-speed interrogation, narrow spectral sensitivity, and high phase stability. The newly developed FDML wavelength swept laser shows a superior performance of a high scan rate of 31.3 kHz and a broad scan range of over 70 nm simultaneously. The performance of the grating sensor interrogating system using a FDML wavelength swept laser is characterized in both static and dynamic strain responses.
Jung
Eun Joo
EJ
Department of Nanosystem Engineering, Pusan National University, Busan, Korea.
Kim
Chang-Seok
CS
Jeong
Myung Yung
MY
Kim
Moon Ki
MK
Jeon
Min Yong
MY
Jung
Woonggyu
W
Chen
Zhongping
Z
D004867:Equipment Design; D019544:Equipment Failure Analysis; D007834:Lasers; D055100:Optical Fibers; D012031:Refractometry / Q000295:instrumentation*; D014159:Transducers