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Title: The characteristic of gap FBG and its application
Authors: Yang, Y
Hu, J
Liu, X
Jin, W 
Keywords: Fizeau interferometer
Gap fiber Bragg gratings
Phase shift FBG
Tunable fiber laser
Issue Date: 2015
Publisher: SPIE-International Society for Optical Engineering
Source: Proceedings of SPIE : the International Society for Optical Engineering, 2015, v. 9655, 96552U 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 influence of the air-gap shift longitudinally or transversely with respect to the fiber central axis and temperature to g-FBG's spectrums are investigated with numerical simulation and experiments, and the mathematic models are made. Based on g-FBG's different sensitivity to gap width and temperature, a micro-gap and temperature simultaneous measurement sensor was demonstrated. And a g-FBG based tunable fiber ring laser with a narrow line-width is demonstrated.
Description: 5th Asia-Pacific Optical Sensors Conference, APOS 2015, 20-22 May 2015
ISBN: 9.78E+12
ISSN: 0277-786X
EISSN: 1996-756X
DOI: 10.1117/12.2183662
Appears in Collections:Conference Paper

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