Thermal performance of metal-clad fiber Bragg grating sensors
摘要：
We demonstrate the higher temperature sensitivity of a fiber Bragg grating (FBG) sensor when it is clad with a metal of a large thermal expansion coefficient. With lead (solder) cladding, the sensitivity of Bragg wavelength shift can be enhanced by about five (four) times. A theoretical model was adopted to show quite consistent results. It was found that thermal annealing was crucial for preparing high-quality fiber Bragg grating sensors with metal claddings.
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关键词：
diffraction gratings fibre optic sensors metallic thin films optical fibre cladding sensitivity thermal expansion Bragg wavelength shift sensitivity high-quality fiber Bragg grating sensors higher temperature sensitivity large thermal expansion coefficient
DOI：
10.1109/68.661425
被引量：
年份：
1998
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