Title :
Integrated optical, TE- and TM-pass, acoustically tunable, double-stage wavelength filters in LiNbO3
Author :
Herrmann, Harald ; Muller-Reich, P. ; Ricken, Raimund ; Seibert, H. ; Sohler, Wolfgang
Author_Institution :
Univ. GH Paderborn, Germany
fDate :
3/26/1992 12:00:00 AM
Abstract :
Two types of double-stage, acousto-optical wavelength filters have been fabricated in X-cut, Y-propagating LiNbO3 by an integration of TE- and TM-pass polarisers and acousto-optical mode convertors in a doubly confined acoustical/optical singlemode waveguide. Filter characteristics with narrow bandwidth (<2 nm), a tuning range of approximately 60 nm around lambda =1.55 mu m and strongly reduced residual sidelobes have been obtained.
Keywords :
acousto-optical devices; band-pass filters; integrated optics; lithium compounds; optical filters; tuning; 1.55 micron; LiNbO 3; TE-pass; TM-pass; X-cut; Y-propagating; acoustically tunable; acousto-optical; acousto-optical mode convertors; acousto-optical wavelength filters; bandpass filters; integrated optics; narrow bandwidth; polarisers; reduced residual sidelobes; singlemode waveguide; tunable optical filters; tuning range; wavelength filters;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920406
