Title :
Spot size convertors using InP/InAlAs multiquantum well waveguides for low-loss singlemode fibre coupling
Author :
Yoshimoto, Naoto ; Kawano, Katsumi ; Takeuchi, H. ; Kondo, Satoshi ; Noguchi, Y.
Author_Institution :
NTT Opto-Electron. Labs., Kanagawa, Japan
Abstract :
A spot size convertor which consists of an InP/InAlAs multiquantum well core with an InGaAsP tapered core is proposed and demonstrated. This device has a potentially very low coupling loss for singlemode optical fibres and also has a large tolerance in fabrication specifications. A coupling loss to a singlemode fibre of 0.4 dB/facet is obtained.
Keywords :
III-V semiconductors; aluminium compounds; indium compounds; integrated optics; optical couplers; optical losses; optical waveguides; semiconductor quantum wells; InGaAsP tapered core; InP-InAlAs; low coupling loss; low-loss singlemode fibre coupling; multiquantum well waveguides; spot size convertor;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19921024
