Title :
Laser-diode/multimode-fibre coupling analysis using a planoconvex GRIN lens
Author :
Sakamoto, Takanori
Author_Institution :
Industrial Laboratory of Hyogo Prefecture, Kobe, Japan
Abstract :
A ray model for a laser diode is introduced for analysing a laser-diode/multimode-fibre coupling system. The validity is examined from the point of view of a far-field pattern. It is shown that the maximum coupling efficiency is obtained between the paraxial image point and the best focus, and decreases as the curvature of the planoconvex GRIN lens increases.
Keywords :
geometrical optics; gradient index optics; lenses; optical couplers; optical fibres; semiconductor junction lasers; coupling efficiency; far-field pattern; laser-diode/multimode-fibre coupling system; paraxial image point; planoconvex GRIN lens; ray model;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860923
