Title :
Power coupling from laser diodes into single-mode fibres with quadrangular pyramid-shaped hemiellipsoidal ends
Author :
Sakaguchi, H. ; Seki, N. ; Yamamoto, Seiichi
Author_Institution :
KDD Research & Development Laboratories, Tokyo, Japan
Abstract :
A novel fabrication method for hemiellipsoidal microlenses formed on fibre ends is proposed, for efficient coupling from laser diodes into single-mode fibres. The method permits the realisation of microlenses with the required ellipticities to match the fields of lasers and fibres. A very low coupling loss of 2.65 dB has been achieved.
Keywords :
optical couplers; optical fibres; semiconductor junction lasers; coupling loss; laser diodes; microlenses; power coupling; quadrangular pyramid-shaped hemiellipsoidal ends; single-mode fibres;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19810295
