Title :
Lithium niobate electro-optic tunable filter with high sidelobe suppression
Author :
Croston, I.R. ; Carr, A.D. ; Parsons, N.J. ; Radcliffe, S.N. ; St. Ville, L.J.
Author_Institution :
GEC Marconi Res. Centre, Chelmsford, UK
Abstract :
The first demonstration of a high sidelobe suppression, tunable, electro-optic filter fabricated in lithium niobate for 1.55 mu m is reported. Weighting of the mode convertor structure using a Taylor distribution resulted in a -3 dB passband width of 1.6 nm and nearest sidelobes of -25 dB. A continuous, linear electro-optic tuning rate of +or-30 V/nm is also reported.
Keywords :
electro-optical devices; integrated optics; lithium compounds; optical filters; tuning; 1.55 micron; LiNbO 3 electrooptic tunable filter; Taylor distribution; high sidelobe suppression; linear electro-optic tuning rate; mode convertor structure weighting; passband width;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930106
