科研之友
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摘要
A high sensitive fiber Bragg grating (FBG) strain sensor with automatic temperature compensation is demonstrated. FBG is axially linked with a stick and their free ends are fixed to the measured object. When the measured strain changes, the stick does not, change in length, but the FBG does. When the temperature changes, the stick changes in length to pull the FBG to realize temperature compensation. In experiments; 1.45 times strain sensitivity of bare FBG with temperature compensation of less than 0.1 run Bragg wavelength drift over 100 degrees C shift is achieved.
- 出版日期2009-3-10
- 单位中国地震局
