Abstract

We propose and experimentally demonstrate a compact, highly efficient, and negligible cross-talk silicon-on- insulator crossing using a periodic dielectric waveguide. The crossing occupies a footprint of less than $4\mathrm{\mu m}\times 4{\mathrm{\mu m}}^{}$. Around $0.7\mathrm{dB}$ insertion loss and lower than $-40\mathrm{dB}$, cross talk was achieved experimentally over a broad wavelength range.

© 2010 Optical Society of America

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