Title :
High performance metal-clad fibre-optic polarisers
Author_Institution :
Phys.-Tech. Inst., Acad. of Sci., Jena, East Germany
fDate :
7/19/1990 12:00:00 AM
Abstract :
The principle of polarisation-selective resonant coupling between a guided optical mode and a metal surface plasmon wave through the evanescent field of the fibre was used to develop fibre-optic polarisers with extinction ratios in excess of 70 dB and losses less than 0.5 dB at 850 nm wavelength. The influence of fibre and thin-film parameters on the polariser performance was investigated both theoretically and experimentally. An improved measurement method for the polariser extinction ratio is demonstrated.
Keywords :
fibre optics; optical communication equipment; optical fibres; optical losses; optical polarisers; plasmons; 850 nm; evanescent field; extinction ratio; extinction ratios; guided optical mode; losses; measurement method; metal surface plasmon wave; metal-clad fibre-optic polarisers; polarisation-selective resonant coupling; thin-film parameters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19900720
