Photonics as a field embraces phenomena that happen on completely different spatial and temporal scales: from nanometres to kilometres and from subfemtoseconds to micro-and milliseconds. Often, such different scales clash in one modelling case. In, for example optical communication systems, the propagation of light through optical fibres with a length from a few metres to hundreds of kilometres is of interest. On the other hand, the size of the electromagnetic modes of such waveguides transverse to the fibre or waveguide axis should be measured in micrometres.
Scattering from micro-and nanostructures is also of interest. Here, near-field distributions of electromagnetic fields can have features in the nanoscale even if, for ...
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