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From the reflected spectrum to the properties of a fiber Bragg grating: a genetic algorithm approach with application to distributed strain sensing

Federico Casagrande, Paola Crespi, Anna Maria Grassi, Alfredo Lulli, Robert P. Kenny, and Maurice P. Whelan

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Abstract

We describe a genetic algorithm approach to solve an inverse problem in optics, which determines the characteristics of a fiber Bragg grating from its reflected spectrum. The validity of the proposed method is demonstrated by use of a Bragg sensor for the measurement of nonlinear strain acting on a uniaxial aluminum test specimen.

© 2002 Optical Society of America

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