On the theory of coupled modes in optical cavity-waveguide structures
Abstract
Light propagation in systems of optical cavities coupled to waveguides can be conveniently described by a general rate equation model known as (temporal) coupled mode theory (CMT). We present an alternative derivation of the CMT for optical cavity-waveguide structures, which explicitly relies on the treatment of the cavity modes as quasinormal modes with properties that are distinctly different from those of the modes in the waveguides. The two families of modes are coupled via the field equivalence principle to provide a physically appealing yet surprisingly accurate description of light propagation in the coupled systems. Practical application of the theory is illustrated using example calculations in one and two dimensions.
Keywords
Cite
@article{arxiv.1701.02929,
title = {On the theory of coupled modes in optical cavity-waveguide structures},
author = {Philip Trøst Kristensen and Jakob Rosenkrantz de Lasson and Mikkel Heuck and Niels Gregersen and Jesper Mørk},
journal= {arXiv preprint arXiv:1701.02929},
year = {2017}
}
Comments
14 pages, 9 figures