Title :
Titanium/magnesium double diffusion method for efficient fibre-LiNbO3 waveguide coupling
Author :
Komatsu, K. ; Kondo, M. ; Ohta, Y.
Author_Institution :
NEC Corporation, Opto-Electronics Research Laboratories, Kawasaki, Japan
Abstract :
A new fibre-Ti: LiNbO3 waveguide coupling loss reduction method, which symmetrises the waveguide depth index profile by Mg diffusion after Ti-diffused waveguide formation, is proposed. A fibre-to-fibre total insertion loss of 0.5 dB for a 1 cm-long waveguide has been obtained using this method.
Keywords :
optical couplers; optical fibres; optical losses; optical waveguides; double diffusion method; fibre-to-fibre total insertion loss; loss reduction method; waveguide coupling; waveguide depth index;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860600
