Rigorous theoretical study of finite-size two-dimensional photonic crystals doped by microcavities

作者：Govand Diyar Tayeb, Daniel R. Maystre · 发表于：Journal of the Optical Society of America A · 年份：1997 · DOI：10.1364/josaa.14.003323 · 被引用次数：208 · 研究领域：Photonic Crystals and Applications、Plasmonic and Surface Plasmon Research、Metamaterials and Metasurfaces Applications

We use a rigorous method for diffraction by a finite set of parallel cylinders to study the influence of defects in a photonic crystal. The method allows us to give an accurate description of all the characteristics of the electromagnetic field (near-field map, scattered field, and energy flow). The localized resonant modes can also be computed. We show some of their symmetry properties and the influence of coupling between two neighboring defects. Finally, an example is given, which shows that a slight local change in the crystal period can be used for the realization of devices that radiate energy in a very narrow angular range.