Integrated horns for improved side coupling into in-plane three-dimensional photonic crystal waveguides

Sell, Curtis; Christensen, Caleb; Muehlmeier, Jason; Tuttle, Gary; Zhi-Yuan Li; Kai-Ming Ho
August 2004
Applied Physics Letters;8/2/2004, Vol. 85 Issue 5, p707
Academic Journal
We examine the frequency response and radiation patterns for horn antennas constructed into a three-dimensional layer-by-layer photonic crystal. These horns resemble a pyramidal cavity and can be built by omitting material during the construction or by removing material from the finished crystal. The horns can be used to couple electromagnetic waves that are incident on the surface of a photonic crystal into an in-plane waveguide within the crystal. The horns are of a design suitable for use at optical frequencies.


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