Title :
Compact InGaAsP/lnP laser diodes with integrated mode expander for efficient coupling to flat-ended singlemode fibres
Author :
Brenner, T. ; Hess, R. ; Melchior, H.
Author_Institution :
Inst. of Quantum Electron., Swiss Federal Inst. of Technol., Zurich, Switzerland
fDate :
8/17/1995 12:00:00 AM
Abstract :
Semiconductor lasers with short integrated mode expanders for efficient coupling to flat-ended singlemode fibres are presented. Laser-to-fibre coupling efficiencies of -3 dB. An improvement of 7 dB compared with conventional laser diodes, have been achieved. Simultaneously, the lateral alignment tolerances, for a dB reduction of the coupling efficiency have been relaxed to ±1.8 μm
Keywords :
III-V semiconductors; gallium arsenide; gallium compounds; indium compounds; integrated optics; laser modes; optical fibre couplers; ridge waveguides; semiconductor lasers; waveguide lasers; InGaAsP-InP; compact laser diodes; flat-ended singlemode fibres; integrated mode expander; laser-to-fibre coupling efficiencies; lateral alignment tolerances; semiconductor lasers;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19951007
