Title :
Modelling fused single-mode-fibre couplers
Author :
Payne, F.P. ; Hussey, C.D. ; Yataki, M.S.
Author_Institution :
University of Southampton, Department of Electronics & Information Engineering, Southampton, UK
Abstract :
The fused single-mode tapered coupler is successfully modelled by assuming that the neck section of the coupler can be represented by a rectangular dielectric waveguide. Guidance is provided at the glass-to-air (or external medium) boundary and the cores are neglected. The mechanism of field detachment from the cores is outlined and the coupler characteristics are derived from the interference between the two lowest-order modes of the large waveguide.
Keywords :
optical couplers; optical fibres; optical waveguide theory; field detachment; fused single-mode-fibre couplers; lowest-order modes; neck section; rectangular dielectric waveguide; tapered coupler;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19850327
