Title :
Passive temperature compensation technique for fibre Bragg grating displacement sensor
Author :
Yu, Youlong ; Tam, HwaYaw ; Liu, Zhiguo ; Chung, Wenghong ; Geng, Shuwei
Author_Institution :
Dept. of Electr. Eng., Hong Kong Polytech. Univ., Kowloon, Hong Kong
fDate :
12/9/1999 12:00:00 AM
Abstract :
A novel fibre Bragg grating displacement sensor is presented. Using a uniform density and thickness overlapped dual-isosceles triangular cantilever beam as a strain agent. It is demonstrated both experimentally and theoretically that this sensor is able to automatically compensate for wavelength shifts induced by temperature. The measured sensitivity of this sensor is 0.1051 nm/mm within the working range of -18-18 mm
Keywords :
Bragg gratings; compensation; displacement measurement; fibre optic sensors; sensitivity; strain sensors; automatically compensate; fibre Bragg grating displacement sensor; measured sensitivity; overlapped dual-isosceles triangular cantilever beam; passive temperature compensation technique; strain agent; uniform density; wavelength shifts; working range;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19991473
