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Proceedings Paper

Interrogation of a dual fiber Bragg grating sensor using an arrayed waveguide grating
Author(s): D. Robertson; Pawel Niewczas; James R. McDonald
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Paper 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.

Paper Details

Date Published: 23 May 2005
PDF: 4 pages
Proc. SPIE 5855, 17th International Conference on Optical Fibre Sensors, (23 May 2005); doi: 10.1117/12.624266
Show Author Affiliations
D. Robertson, Christ's College (United Kingdom)
Pawel Niewczas, Univ. of Strathclyde (United Kingdom)
James R. McDonald, Univ. of Strathclyde (United Kingdom)

Published in SPIE Proceedings Vol. 5855:
17th International Conference on Optical Fibre Sensors
Marc Voet; Reinhardt Willsch; Wolfgang Ecke; Julian Jones; Brian Culshaw, Editor(s)

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