Modelling of Fiber Bragg Grating for sensor application

Author

Sharan, Preeta ; Thakur, Gautam ; Sanjay, S. ; Chitranjan

fYear

2012

fDate

26-28 July 2012

Firstpage

1

Lastpage

6

Abstract

This paper presents modelling of Fiber Bragg Grating (FBG), in order to provide the optimized parameters for designing sensor. FBG sensor applications require narrow spectral response for achieving good performance. Spectral characteristics parameters like FBG length, grating pitch, cladding index, apodization and (Full Width Half Maximum) FWHM are varied for achieving good response. Simulation results from R-Soft show that at L=2500μm, 99.89% reflectivity has been obtained. Suppression of side lobes in the spectrum with cosine apodization results in efficiency of 97.97% and sharp spectral response having FWHM =1.01μm has been achieved and hence makes FBG suitable for sensor application.

Keywords

Bragg gratings; fibre optic sensors; optical design techniques; optical fibre cladding; optical fibre theory; reflectivity; FBG length; FBG sensor applications; FWHM; R-Soft; cladding index; cosine apodization; fiber Bragg grating; full width half maximum; grating pitch; narrow spectral response; optimized parameters; reflectivity; sensor design; sharp spectral response; side lobe suppression; Fiber gratings; Gratings; Optical fiber sensors; Optical fibers; Reflectivity; Refractive index; CMT; FBG; FWHM; TMM;

fLanguage

English

Publisher

ieee

Conference_Titel

Optical Engineering (ICOE), 2012 International Conference on

Conference_Location

Belgaum

Print_ISBN

978-1-4673-2461-8

Electronic_ISBN

978-1-4673-2462-5

Type

conf

DOI

10.1109/ICOE.2012.6409595

Filename

6409595