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16 May 2008 FBG sensor interrogation based on RF signal measurement
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Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 700423 (2008) https://doi.org/10.1117/12.785928
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia
Abstract
A novel interrogation method for optical fiber Bragg grating (FBG) sensors has been proposed by converting the change of the FBG wavelength into the phase difference between two radio frequency (RF) signals. As a result, the beating-induced RF signal power changes with the FBG wavelength shift. This technique could be used for high speed FBG interrogation and, due to the use of a second FBG to produce the reference RF signal, temperature cross-sensitivity effect is compensated automatically. Theoretical analysis and experimental demonstration have been carried out. Performances of the FBG sensor interrogation scheme have been studied.
© (2008) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xinyong Dong, Li-Yang Shao, H. Y. Fu, H. Y. Tam, and C. Lu "FBG sensor interrogation based on RF signal measurement", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 700423 (16 May 2008); https://doi.org/10.1117/12.785928
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