Interrogation of a dual fiber Bragg grating sensor using an arrayed waveguide grating

D. Robertson; Pawel Niewczas; James R. McDonald

doi:10.1117/12.624266

23 May 2005 Interrogation of a dual fiber Bragg grating sensor using an arrayed waveguide grating

D. Robertson, Pawel Niewczas, James R. McDonald

Proceedings Volume 5855, 17th International Conference on Optical Fibre Sensors; (2005) https://doi.org/10.1117/12.624266
Event: 17th International Conference on Optical Fibre Sensors, 2005, Bruges, Belgium

Abstract

In this paper we consider the possibility of improving the accuracy of a fiber Bragg grating (FBG) interrogation system by, instead of using one FBG, using two inscribed on the same location of the fiber with a small difference in the peak wavelength each reflects. Signal processing can be applied to the outputs of photodetectors connected to an arrayed waveguide grating (AWG) to provide a linear response from the sensor. Demonstrated here is that this method reduces errors compared to a single FBG system with the same spectral bandwidth and number of channels from the AWG.

Citation Download Citation

D. Robertson, Pawel Niewczas, and James R. McDonald "Interrogation of a dual fiber Bragg grating sensor using an arrayed waveguide grating", Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); https://doi.org/10.1117/12.624266

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