Silicon photonic integration with subwavelength gratings

Subwavelength grating structures with a pitch smaller than the Bragg resonance length can be used for engineering the refractive index in silicon photonic waveguides. We discuss the principles, design, fabrication and applications of subwavelength nanostructures in silicon photonics and review our recent results on fiber-chip coupling structures, surface grating couplers, waveguide crossings, and athermal waveguides with a polymersilicon hybrid core.
16th International Conference on Transparent Optical Networks, ICTON 2014, 6 July 2014 through 10 July 2014, Graz