Title :
High-efficiency superluminescent diodes for optical-fibre transmission
Author :
Amann, M.-C. ; Boeck, J.
Author_Institution :
Technische Universitÿt Mÿnchen, Lehrstuhl fÿr Allgemeine Elektrotechnik und Angewandte Elektronik, Mÿnchen, West Germany
Abstract :
A remarkable improvement of external efficiency is achieved in double-heterojunction GaAs-GaAlAs superluminescent diodes (d.h. s.l.d.s) by application of antireflective coatings on the front face. The external differential quantum efficiency of 750¿1500 ¿m long s.l.d.s increased from 1.2% to 4.5% (n.a.=0.7) after coating the front face with a quarter-wavelength silicon-monoxide film.
Keywords :
antireflection coatings; gallium arsenide; light emitting diodes; optical communication equipment; GaAs-GaAlAs DH superluminescent diodes; antireflective coatings; external efficiency; quartz wavelength SiO film;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19790029
