Open AccessEfficient slow light coupling into photonic crystals
Author(s) -
C. Martijn de Sterke,
Judith S. Walker,
Kokou B. Dossou,
L. C. Botten
Publication year - 2007
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.15.010984
Subject(s) - photonic crystal , optics , reflection (computer programming) , coupling (piping) , fresnel equations , photonics , optoelectronics , slow light , total internal reflection , materials science , waveguide , physics , refractive index , computer science , metallurgy , programming language
We study light coupling between two photonic crystal wave-guides, one of which supports slow light. We show theoretically that a short photonic crystal waveguide between the two that need to be coupled, can lead to a vanishingly small reflectivity. The design relies on the analogy with a lambda/4 anti-reflection layer in thin-film optics.We find that some of the usual relationships between the Fresnel coefficients at an interface no longer hold.