Taper structures for coupling into photonic crystal slab waveguides
نویسندگان
چکیده
We present an adiabatic taper design in three dimensions for coupling light into photonic crystal defect waveguides in a square lattice of circular dielectric rods. The taper is a two-stage structure in which the first stage makes the transition from a dielectric waveguide to a coupled-cavity waveguide. The second stage subsequently transforms the waveguide mode from an index-guided mode to a band-gap-guided mode. We discuss differences between the two-dimensional device and its three-dimensional slab version. © 2003 Optical Society of America OCIS codes: 060.1810, 130.3120, 230.7370.
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