Compact InGaAsP/InP laser diodes with integratedmodeexpander for efficient coupling to flat-ended singlemode fibres
- 17 August 1995
- journal article
- Published by Institution of Engineering and Technology (IET) in Electronics Letters
- Vol. 31 (17) , 1443-1445
- https://doi.org/10.1049/el:19951007
Abstract
Semiconductor lasers with short integrated mode expanders for efficient coupling to fiat-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 1 dB reduction of the coupling efficiency have been relaxed to ±1.8 µm.Keywords
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