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

Optical Society of America
Publication Type:
Journal Article
Optics Letters, 2008, 33 (22), pp. 2644 - 2646
Issue Date:
Full metadata record
Files in This Item:
Filename Description SizeFormat
2007005356.pdf202.79 kBAdobe PDF
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 ng>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.
Please use this identifier to cite or link to this item: