17 October 2012 Gap FBG and its application in tunable narrow linewidth fiber laser
Author Affiliations +
Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84214J (2012) https://doi.org/10.1117/12.974813
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China
Abstract
A gap fiber Bragg grating (g-FBG) is fabricated by cutting a uniform FBG in the middle to introduce a small air gap between the two sections. Numerical and experimental investigations show that the g-FBG has the characteristics of both a phase shifted FBG and a Fizeau interferometer. The peak transmission wavelength of the g-FBG can be tuned by adjusting the air-gap longitudinally or transversely with respect to the fiber center-axis. With a g-FBG as tunable intra-cavity filter, a tunable fiber ring laser with a narrow line-width is demonstrated. The wavelength tuning range of the laser is 0.12 nm with a output power flatness better than 0.9 dB. The 3 dB spectral line-width is less than 12 pm and output power is 3.68 dBm.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Yuanhong Yang, Xiaozhe Zhang, Jin-jin Guo, Wei Jin, Mingwei Yang, "Gap FBG and its application in tunable narrow linewidth fiber laser", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84214J (17 October 2012); doi: 10.1117/12.974813; https://doi.org/10.1117/12.974813
PROCEEDINGS
4 PAGES


SHARE
Back to Top