Preservation of polarisation in optical-fibre waveguides with elliptical cores
- 21 June 1979
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 15 (13) , 380-382
- https://doi.org/10.1049/el:19790275
Abstract
Elliptically cored fibres with large index differences have been drawn and shown to hold polarisation well, the modal beat length being less than 1 mm. An analysis of the propagation characteristics shows that there is a point below the higher-mode cutoff where the difference in group velocities between the two fundamental modes is zero but where there is a large enough difference in the phase velocities to preserve polarisation.Keywords
This publication has 0 references indexed in Scilit: