Title :
Photosensitivity measurement in optical fibre with Bragg grating interferometers
Author :
Swart, P.L. ; Shlyagin, M.G. ; Chtcherbakov, A.A. ; Spirin, V.V.
Author_Institution :
Centre for Opt. Commun. & Sensors, RAU, South Africa
fDate :
11/21/2002 12:00:00 AM
Abstract :
A new technique based on two low-finesse fibre Bragg grating Fabry-Perot interferometers to study photosensitivity in optical fibre is presented. Phase evaluation using the Fourier spectra allows precise determination of the evolution of the refractive index with accumulated fluence. Results are given for different germanium/boron codoped fibres and for hydrogen-loaded fibres.
Keywords :
Bragg gratings; Fabry-Perot interferometers; optical fibre testing; refractive index measurement; Bragg grating interferometers; Fourier spectra; Ge/B codoped fibres; fibre Bragg grating; hydrogen-loaded fibres; low-finesse FBG Fabry-Perot interferometers; optical fibre; phase evaluation; photosensitivity measurement technique; refractive index;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20021046
