Efficient slow-light coupling in a photonic crystal waveguide without transition region

T. P. White, L. C. Botten, C. Martijn de Sterke, K. B. Dossou, R. C. McPhedran

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

We consider the coupling into a slow mode that appears near an inflection point in the band structure of a photonic crystal waveguide. Remarkably, the coupling into this slow mode, which has a group index n(g) > 1000, can be essentially perfect without any transition region. We show that this efficient coupling occurs thanks to an evanescent mode in the slow medium, which has appreciable amplitude and helps satisfy the boundary conditions but does not transport any energy. (C) 2008 Optical Society of America

Original languageEnglish
Pages (from-to)2644-2646
Number of pages3
JournalOptics Letters
Volume33
Issue number22
DOIs
Publication statusPublished - 15 Nov 2008

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