In this paper, we report on nonlinearity compensation for a solid-state fiber bragg grating (FBG) sensor interrogation system based on an arrayed waveguide grating (AWG) device. A lookup table with calibration data is used to improve system linearity. A reduction in the absolute value of the measurement error from 120 mustrain or 15degC to 4.8 mustrain or 0.6degC, respectively, is experimentally demonstrated.
|Journal||IEEE Transactions on Instrumentation and Measurement|
|Publication status||Published - 2008|
- arrayed waveguide gratings
- bragg gratings
- fibre optic sensors
- optical waveguides