We use subwavelength gratings (SWGs) to engineer the refractive index in microphotonic
waveguides, including practical components such as input couplers and multiplexer circuits …

We propose a new method for mode conversion and coupling between an optical fiber and
a sub-micrometer waveguide using a subwavelength grating (SWG) with a period less than …

It is a remarkable and straightforward approach to customize the dispersion and nonlinear
properties of the photonic devices without varying the composition of the material by …

We propose a silicon waveguide-fiber grating coupler that uses a subwavelength
microstructure to achieve a continuously variable grating strength yet can be fabricated …

High efficiency diffractive grating structures to interface a single mode optical fiber and a
nanophotonic integrated circuit fabricated on silicon-on-insulator are presented. The …

As most integrated optics platforms, silicon offers only a fixed set of material refractive
indices for designing devices. The ability of sub-wavelength patterned structures to …

We report on the experimental demonstration and analysis of a new waveguide principle
using subwavelength gratings. Unlike other periodic waveguides such as line-defects in a …

We present a rigorous approach for designing a highly efficient coupling between single
mode optical fibers and silicon nanophotonic waveguides based on diffractive gratings. The …

Surface grating couplers are fundamental components in chip-based photonic devices to
couple light between photonic integrated circuits and optical fibers. In this work, we report on …

We report on the design, simulation and experimental demonstration of a new type of
waveguide crossing based on subwavelength gratings in silicon waveguides. We used 3D …