Optimisation Of The Coupling Efficiency Between A Semiconductor Laser And A Monomode Optical Fibre

G. Georgiou

doi:10.1117/12.934563

30 August 1983 Optimisation Of The Coupling Efficiency Between A Semiconductor Laser And A Monomode Optical Fibre

G. Georgiou

Author Affiliations +

Proceedings Volume 0374, Fibre Optics '83; (1983) https://doi.org/10.1117/12.934563
Event: Sira/Fibre Optics '83, 1983, London, United Kingdom

Abstract

The coupling efficiency between semiconductor lasers and single mode fibres can be greatly increased if a microlens of appropriate focal length is fabricated at the end of the fibre, the reason being that the lens can effectively improve the mode matching of the laser and fibre fields. Using simple techniques we have fabricated hemispherical microlenses at the end of fibres. Coupling efficiencies of about 50% have been achieved. The thoery used to predict the lens parameters for maximum coupling regards the lens as a 'thick lens' and shows that spherical aberration contributes to coupling loss.

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G. Georgiou "Optimisation Of The Coupling Efficiency Between A Semiconductor Laser And A Monomode Optical Fibre", Proc. SPIE 0374, Fibre Optics '83, (30 August 1983); https://doi.org/10.1117/12.934563

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