Title :
Low voltage tunable in-line channel dropping filter using liquid crystal waveguide overlays
Author :
Madden, W.I. ; Johnstone, Walter
fDate :
5/22/1997 12:00:00 AM
Abstract :
A tunable in-line fibre optic channel dropping filter is reported using evanescent coupling from a single-mode fibre to a thin waveguiding layer of nematic liquid crystal material. The large electro-optic coefficient of the liquid crystal allows low drive voltages. A tuning range of 40 nm for 10 V has been demonstrated
Keywords :
electro-optical filters; liquid crystal devices; optical fibre filters; optical waveguide filters; 10 V; electro-optic coefficient; evanescent coupling; liquid crystal waveguide overlay; low voltage operation; nematic liquid crystal; single-mode fibre; tunable in-line fibre optic channel dropping filter;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19970631
