Efficient slow light coupling into photonic crystals

Publication Type:
Journal Article
Citation:
Optics Express, 2007, 15 (17), pp. 10984 - 10990
Issue Date:
2007-08-20
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We study light coupling between two photonic crystal waveguides, 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 λ/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. © 2007 Optical Society of America.
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