Open AccessRefractive index profile of fused-tapered fiber couplers
Author(s) -
Elio Pone,
Xavier Daxhelet,
Suzanne Lacroix
Publication year - 2004
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/opex.12.002909
Subject(s) - tapering , refractive index , optics , refractive index profile , step index profile , materials science , normalized frequency (unit) , optical fiber , graded index fiber , fiber optic sensor , physics , computer graphics (images) , phase locked loop , frequency synthesizer , computer science , phase noise
We investigate the refractive index profile evolution during the tapering of fused couplers. We assume the refractive index to be a linear function of the dopant concentration. The evolution of the refractive index profile is obtained by solving the diffusion-convection equation. The couplers are cleaved at different positions along the coupler axis, and the real refractive index profiles, measured using Refracted-Near-Field technique, are compared with the numerical solutions.