Title :
Integrated optical 4Ã\x974 star coupler on LiNbO3
Author :
Heidrich, H. ; Hoffmann, Dieter ; D¿¿ldissen, W. ; Klug, Michael
Author_Institution :
Heinrich-Hertz-Institut fÿr Nachrichtentechnik Berlin GmbH, Berlin, West Germany
Abstract :
A novel low-loss passive planar 4×4 star coupler consisting of four interconnected 3 dB couplers was fabricated on x-cut Ti: LiNbO3 using z-propagation. Almost even distribution was achieved for both TE and TM polarised light incident on any of the four inputs. Excess loss including fibre coupling was <4.2 dB.
Keywords :
integrated optics; lithium compounds; optical communication equipment; optical couplers; optical fibres; optical waveguides; titanium; 4Ã\x974 star coupler; LiNbO3:Ti; TE mode; TM polarised light; X-cut; Z-propagation; integrated optics; less than 4.2 dB excess loss; low-loss type; optical communication devices; optical couplers; optical fibres; passive planar configuration; single-mode operation;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19840723
