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A comparison of the sensing characteristics of long period gratings written in three different types of fiber

✍ Scribed by T. Allsop; D.J. Webb; I. Bennion

Publisher: Elsevier Science
Year: 2003
Tongue: English
Weight: 276 KB
Volume: 9
Category: Article
ISSN: 1068-5200
DOI: 10.1016/s1068-5200(03)00028-2

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✦ Synopsis

This paper compares the environmental sensing behaviour of long period gratings written in three fibers with different refractive index profiles: step, W and a progressive three layered fiber. The measurands considered are temperature, refractive index, axial strain and bending, and the spectral behaviour of individual attenuation bands were observed and, where possible, compared to theoretical predictions. Significant differences in the behaviour of the three fiber types were found.

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