Low crosstalk waveguide intersections in honeycomb lattice photonic crystals forTM-polarized light

Abstract

We present the design of a low crosstalk, high throughput waveguide intersection fortransverse-magnetic-polarized light. The design is based on two orthogonal photonic crystalwaveguides and a resonant photonic crystal cavity in honeycomb lattice geometry. Theresults of our numerical simulation validate the concept of the design and demonstrate acrosstalk smaller than 0.1% and throughput transmission of more than 80% for bothorthogonal waveguide branches.