Efficient power coupling using taper-ended multimode optical fibres

11 November 1976

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 12 (23) , 607-608
https://doi.org/10.1049/el:19760464

Abstract

Highly efficient power coupling of up to 97% between a d.h. laser and a multimode step-index fibre is demonstrated by employing a tapered fibre launcher. Also, it is shown theoretically that a tapered end increases the effective numerical aperture of a fibre. For a Lambertian emitter, the use of a taper launcher permits the maximum coupling efficiency allowed by the Liouville theorem.

Keywords

TAPERED FIBRE LAUNCHER
OPTICAL FIBRE COUPLERS
EXPERIMENTAL RESULTS
SEMICONDUCTOR LASER COUPLING TO FIBRE
LAMBERTIAN EMITTER
STEP INDEX FIBRE
97% COUPLING
EFFECTIVE NUMERICAL APERTURE
DOUBLE HETEROSTRUCTURE LASER
EFFICIENT POWER COUPLING
MAXIMUM COUPLING EFFICIENCY
LIOUVILLE THEOREM
TAPER ENDED MULTIMODE OPTICAL FIBRES

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