Fibre Bragg gratings in structural health monitoring—Present status and applications

Dasgupta, Kamal; Bhattacharya, D.K.; Gangopadhyay, Tarun Kumar; Chakraborty, Ashim Kumar; Majumder, Mousumi

doi:10.1016/j.sna.2008.04.008

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Fibre Bragg gratings in structural health monitoring—Present status and applications

Author(s): Mousumi Majumder , Tarun Kumar Gangopadhyay , Ashim Kumar Chakraborty , Kamal Dasgupta , D.K. Bhattacharya

Publication date Created: September 2008

Publication date (Print): September 2008

Journal: Sensors and Actuators A: Physical

Publisher: Elsevier BV

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Fiber grating sensors

A.D. Kersey, M.A. Davis, H.J. Patrick … (1997)

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Formation of Bragg gratings in optical fibers by a transverse holographic method.

G Meltz, W Morey, W. Glenn (1989)

Bragg gratings have been produced in germanosilicate optical fibers by exposing the core, through the side of the cladding, to a coherent UV two-beam interference pattern with a wavelength selected to lie in the oxygen-vacancy defect band of germania, near 244 nm. Fractional index perturbations of approximately 3 x 10(-5) have been written in a 4.4-mm length of the core with a 5-min exposure. The Bragg filters formed by this new technique had reflectivities of 50-55% and spectral widths, at half-maximum, of 42 GHz.