Highly anisotropic periodic waveguide structures show gigantic field enhancements near a split band-edge due to low group velocities. An effective negative index regime is observed, leading to strong but localized field emission around the waveguide.
© 2008 Optical Society of America
J. O. Schenk, R. P. Ingel, M. A. Fiddy, and W. Yang, "Split Band Edge Structures and Negative Index," in Slow and Fast Light, (Optical Society of America, 2008), paper SMB6.
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