Graded‐index materials offer virtually complete control over light propagation in integrated
photonic chips but can be challenging to implement. Here, an anisotropic graded‐index …

Integrated metamaterials are redefining the capabilities of silicon photonic chips. In
providing lithographic control over dielectric permittivity, dispersion and anisotropy, they are …

Subwavelength grating (SWG) metamaterials have garnered a great interest for their
singular capability to shape the material properties and the propagation of light, allowing the …

We present perfectly vertical grating couplers for the 220 nm silicon-on-insulator platform
incorporating subwavelength metamaterials to increase the minimum feature sizes and …

Segmenting silicon waveguides at the subwavelength scale produce an equivalent
homogenous material. The geometry of the waveguide segments provides precise control …

Adiabatic waveguide taper is one of the fundamental building blocks in photonic integrated
circuits, but it is challenging to achieve high efficiency and compact size simultaneously …

Bragg gratings are fundamental building blocks for integrated photonic circuits. In the high-
index contrast silicon-on-insulator material platform, it is challenging to accurately control the …

The availability of low-loss optical interfaces to couple light between standard optical fibers
and high-index-contrast silicon waveguides is essential for the development of chip …

Silicon photonics is playing a key role in areas as diverse as high-speed optical
communications, neural networks, supercomputing, quantum photonics, and sensing, which …

Subwavelength grating (SWG) structures are an essential tool in silicon photonics, enabling
the synthesis of metamaterials with a controllable refractive index. Here we propose, for the …