Substructuring approach to optimization of matching structures for photonic crystal waveguides

Orli Hershkoviz*, Ben Z. Steinberg, Amir Boag

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

Abstract

Micro-cavities formed by local defects within an otherwise perfect photonic crystal can trap light and resonate at wave-lengths within the stop-band of the background crystal. An array of equally spaced identical micro-cavities forms the Coupled Cavity Waveguide (CCW) - a narrow band waveguide whose central frequency and bandwidth are determined by the micro-cavities form and their inter-spacing. Such devices can be used as optical or millimeter wave filters, routers, and (de-)multiplexers. In this work we develop a method for matching these devices to external structures. We formulate an optimization problem in which one seeks for the minimum of a properly defined Standing Wave Ratio (SWR), with respect to limited variations of the dielectric structure in the neighborhood of the interface between the sub-system (micro-cavity, CCW) and the external structure. A novel numerical approach to solve this problem is developed and tested on few examples.

Original languageEnglish
Pages247-250
Number of pages4
StatePublished - 2004
Event2004 23rd IEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings - Tel-Aviv, Israel
Duration: 6 Sep 20047 Sep 2004

Conference

Conference2004 23rd IEEE Convention of Electrical and Electronics Engineers in Israel, Proceedings
Country/TerritoryIsrael
CityTel-Aviv
Period6/09/047/09/04

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