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A practical package technique for FBG-based temperature independent sensor

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3 Author(s)
Keke Tian ; Inst. of Semicond., Acad. Sinica, Beijing, China ; Yuliang Liu ; Iming Wang

A practical packaging technique for a temperature independent Fiber Bragg grating sensor is proposed. A uniform strength cantilever with two FBG attached on the upper and lower surfaces is utilized as the key element. By detecting the differential output of two wavelengths, the applied force can be obtained and temperature effects can be eliminated. Experimental results show that the sensor has a linear response and the output signal fluctuates less than 12 pm as the temperature changes from -10°C to 50°C. The maximum thermal error is less than 0.3% of the full measurement range.

Published in:

Solid-State and Integrated Circuits Technology, 2004. Proceedings. 7th International Conference on  (Volume:3 )

Date of Conference:

18-21 Oct. 2004