Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/40806
Title: Gap FBG and its application in tunable narrow linewidth fiber laser
Authors: Yang, Y
Zhang, X
Guo, J
Jin, W 
Yang, M
Keywords: Fiber Bragg gratings
Fiber lasers
Lasers
Wavelength tuning
Fizeau interferometer
Issue Date: 2012
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, 2012, v. 8421, 84214J How to cite?
Journal: Proceedings of SPIE : the International Society for Optical Engineering 
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.
Description: 22nd International Conference on Optical Fiber Sensors, Beijing, China, 15-19 Oct 2012
URI: http://hdl.handle.net/10397/40806
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.974813
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