High-efficiency superluminescent diodes for optical-fibre transmission
- 18 January 1979
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 15 (2) , 41-42
- https://doi.org/10.1049/el:19790029
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 μm 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
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