"Subwavelength Structures in Silicon-on-Insulator Waveguides for Modification of Facet Reflectivity and Efficient Fiber-Chip Coupling"

First implementations of subwavelength gratings in silicon-on-insulator waveguides are discussed and demonstrated by experiment and simulations. The subwavelength effect is exploited for making antireflective and highly reflective waveguide facets as well as efficient fiber-chip coupling structures for photonic wire waveguides.