Truncated photonic crystal cavities with optimized mode confinement

Optimization of a truncated, dielectric photonic crystal cavity leads to configurations that are far from truncated crystal cavities, and which have significantly better radiation confinement. Starting from a two-dimensional truncated photonic crystal cavity with optimal Q -factor, moving the rods f...

Full description

Saved in:
Bibliographic Details
Published in:Journal of applied physics 2008-09, Vol.104 (5), p.053107-053107-4
Main Authors: Bauer, Carl A., Werner, Gregory R., Cary, John R.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Optimization of a truncated, dielectric photonic crystal cavity leads to configurations that are far from truncated crystal cavities, and which have significantly better radiation confinement. Starting from a two-dimensional truncated photonic crystal cavity with optimal Q -factor, moving the rods from the lattice positions can increase the Q -factor by orders of magnitude, e.g., from 130 to 11 000 for a cavity constructed from 18 rods. In the process, parity symmetry breaking occurs. Achieving the same Q -factor with a regular lattice requires 60 rods. Therefore, using optimized irregular structures for photonic cavities can greatly reduce material requirements and device size.
ISSN:0021-8979
1089-7550
DOI:10.1063/1.2973669