Focusing of electromagnetic waves by periodic arrays of air holes with gradually varying radii

Hung Ta Chien, Chii Chang Chen

Research output: Contribution to journalArticlepeer-review

56 Scopus citations

Abstract

We study theoretically the focusing effects when a Gaussian beam passing through a graded photonic crystal consisting of air holes with gradually varying radii. The device is used to couple the light between the conventional and photonic crystal waveguides. The coupling efficient is about 4 times higher than that by the linear taper structure.

Original languageEnglish
Pages (from-to)10759-10764
Number of pages6
JournalOptics Express
Volume14
Issue number22
DOIs
StatePublished - Oct 2006

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