Title :
Rays and modes in optical fibres
Author_Institution :
University College London, Department of Electronic & Electrical Engineering, London, UK
Abstract :
Difficulties have recently been noted in the application of geometric optics to modal propagation and cutoff in optical fibres. It is shown here that geometric optics is adequate, provided that it treats collectively the congruence of modal rays.
Keywords :
fibre optics; geometrical optics; optical waveguides; fibre optics; geometrical optics; optical waveguides; ray method; total internal reflection;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19740074
