Modeling of 2D photonic bandgap structures using a triangular mesh finite difference method

G. Ronald Hadley

doi:10.1117/12.446544

29 October 2001 Modeling of 2D photonic bandgap structures using a triangular mesh finite difference method

G. Ronald Hadley

Proceedings Volume 4594, Design, Fabrication, and Characterization of Photonic Devices II; (2001) https://doi.org/10.1117/12.446544
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore

Abstract

A numerical model is presented for computing the out-of- plane losses of a general class of row-defect waveguides formed by the superposition of a 2D photonic crystal onto a slab confinement structure. The usefulness of this model is demonstrated here by calculating the propagation loss of a single-row-defect waveguide composed of hexagonal air holes etched into two different slab structures. The results are interpreted in terms of a simple coupled-mode-theory picture in which loss is due to coupling by the waveguide corrugation between the fundamental and certain radiative slab modes. These calculations show that low-loss photonic crystal waveguides should be possible by carefully engineering the radiation modes of the slab waveguide.

Citation Download Citation

G. Ronald Hadley "Modeling of 2D photonic bandgap structures using a triangular mesh finite difference method", Proc. SPIE 4594, Design, Fabrication, and Characterization of Photonic Devices II, (29 October 2001); https://doi.org/10.1117/12.446544

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