✦ LIBER ✦

Characterization of dynamic strain measurement using reflection spectrum from a fiber Bragg grating

✍ Scribed by Hang-Yin Ling; Kin-Tak Lau; Wei Jin; Kok-Cheung Chan

Publisher: Elsevier Science
Year: 2007
Tongue: English
Weight: 400 KB
Volume: 270
Category: Article
ISSN: 0030-4018
DOI: 10.1016/j.optcom.2006.08.032

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✦ Synopsis

A simulation method for evaluating dynamic strain distribution along a uniform Fiber Bragg Grating (FBG) using its reflection spectrum is presented in this paper. This method is valid for simulating both uniform and non-uniform strain distributions along the FBG under various dynamic conditions. The reflection spectrum from the FBG, subjected to different strain profiles, is simulated based on the Transfer matrix (T-matrix) approach. Three strain profiles, such as a uniform strain, a linear strain gradient and a quadratic strain field, are selected to demonstrate the viability of the proposed method. The importance of the dynamic simulation of the reflection spectrum on the filter design in a FBG dynamic strain sensing system is highlighted.

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