Title :
Mode transit times in near-parabolic-index optical fibres
Author :
Adams, M.J. ; Payne, David N. ; Sladen, F.M.E.
Author_Institution :
University of Southampton, Department of Electronics, Southampton, UK
Abstract :
Calculations are presented of the transit times of guided and tunnelling rays in graded-index optical fibres. It is shown that 25% of the power launched by an incoherent source into a parabolic-index fibre is carried by leaky rays, which may increase the r.m.s. width of the impulse response by up to 41%. The profile which most effectively equalises the combined transit times of both guided and tunnelling rays is given by ¿=2¿4¿
Keywords :
fibre optics; guided light propagation; optical waveguides; graded index optical fibres; guided rays; transit times; tunnelling rays;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19750295
