Efficient power coupling using taper-ended multimode optical fibres |
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| Authors: | Ozeki Takeshi Kawasaki BS |
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| Affiliation: | Communications Research Centre, Department of Communications, Ottawa, Canada; |
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| 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. |
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