Nanophotonic beamsplitters are fundamental building blocks in integrated optics, with
applications ranging from high speed telecom receivers to biological sensors and quantum …

Semiconducting nanostructures are promising as components in high-performance
metasurfaces. We show that single-crystal silicon can be used to realize efficient …

A new concept of dielectric subwavelength grating has emerged. This grating leverages a
high contrast in refractive indices for the grating medium and its surroundings. We will …

The prospect of creating metamaterials with optical properties greatly exceeding the
parameter space accessible with natural materials has been inspiring intense research …

The rapid development of photonic integrated circuits demands the design of efficient and
compact waveguide devices such as waveguide tapers and crossings. Some components in …

We report the first experimental demonstration of a novel single-layer subwavelength grating
(SWG) that has> 500-nm-wide reflection spectrum from 1.12-1.62 μm and very high …

Properties of reflection and transmission spectral filters based on Bragg gratings in
subwavelength grating (SWG) metamaterial waveguides on silicon-on-insulator platform …

Germanium based photonic devices can play a significant role in several applications,
particularly in the so-called fingerprint wavelength region. Here, we review our recent results …

Dielectric metasurfaces are two‐dimensional structures composed of nano‐scatterers that
manipulate the phase and polarization of optical waves with subwavelength spatial …

We report a novel subwavelength grating that has a very broad reflection spectrum and very
high reflectivity. The design is scalable for different wavelengths. It facilitates monolithic …