Passive Temperature-Compensating Technique for Microstructured Fiber Bragg Gratings

Details Passive Temperature-Compensating Technique for Microstructured Fiber Bragg Gratings Passive Temperature-Compensating Technique for Microstructured Fiber Bragg Gratings

2010-02-28

arxiv.org/abs/1003.0163v1

IEEE Sensors Journal 8, 7 (2008) 1073-1078

Physics

Optics

Scientific paper

10.1109/JSEN.2008.926169

The thermal drift of the characteristic wavelength of fiber Bragg gratings (FBGs) photowritten in the core of microstructured fibers (MOFs) is significantly reduced by inserting a liquid of suitable refractive index into their holes. For instance, the spectral range of variations is divided by a factor of 4 over a temperature range larger than 20\degree C in a six-hole MOF, and the maximum sensitivity is reduced. Such passive FBG temperature compensation technique is of great interest for applications involving accurate sensing free of thermal effects.

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