Open AccessGuided modes and loss in Bragg fibres
Author(s) -
Alexander Argyros
Publication year - 2002
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.10.001411
Subject(s) - optics , lossy compression , mode (computer interface) , degenerate energy levels , wavelength , refractive index , coupled mode theory , transmission loss , core (optical fiber) , materials science , physics , computer science , quantum mechanics , artificial intelligence , operating system
In this paper we investigate Bragg fibres and compare calculations on the exact fibre structures with calculations based on band diagrams and a simplified model involving multilayers. We show how the number of layers and the core size affect the wavelengths guided, the loss and the effective singlemodedness. An approximate relation between the real and imaginary parts of the effective mode indices is derived. The general design considered has a TE mode as the least lossy mode providing effectively single polarisation non-degenerate mode guidance.