Far-field emission of a tapered optical fibre tip: a theoretical analysis.
The far-field transmission pattern of a tapered optical tip with small aperture (radius approximately < 40 nm) is modelled by solving Maxwell's equations in the radiation zone with boundary conditions appropriate to the conical geometry. The model is able to reproduce the large differences between the S and P polarizations observed previously in the emission profile of such a tip [Obermüller and Karrai. Appl. Phys. Lett. (1995) 67, 3408].
Drezet
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Laboratoire de Spectrométrie Physique, CNRS UMR5588, Université Joseph Fourier Grenoble, BP 87, 38402 Saint Martin d'Hères cedex, France.
Woehl
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Huant
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