Two-dimensional grating couplers are important components for silicon photonic circuits to
achieve light coupling from/to a fiber for both polarizations. A two-dimensional grating …

We design and demonstrate a two-dimensional grating coupler with an elliptical-like etching
pattern on the silicon-on-insulator platform. The polarization-dependent loss of the …

A four-port grating coupler with etched square holes is proposed and demonstrated for
surface-normal and polarization independent coupling. Benefiting from the perfectly vertical …

Coherent techniques for short reach intra-datacenter optical interconnects are currently
intensely discussed. This article reports progress on previous work that analyzed the …

We investigate numerically and experimentally sheared 2D grating couplers in a photonic
BiCMOS technology with a focus on their splitting behavior. Two realization forms of a …

A two-dimensional grating coupler (2D GC) with four access waveguides is proposed and
demonstrated for polarization independent and perfectly vertical coupling. Benefitting from …

Efficient coupling between optical fibers and high-index-contrast silicon waveguides is
essential for the development of integrated nanophotonics. Herein, a high-efficiency dual …

A polarization-independent grating coupler, optimized for a low in-plane scattering and PDL
is presented. It comprises an array of ovals with zig-zag orientations and is compatible with a …

Two-dimensional (2D) diffractive gratings offer a polarization-independent coupling solution
between optical fibers and photonic integrated circuits, with advantages including placement …

Silicon photonic two-dimensional grating couplers for C-and O-band dual-polarization
coherent transceivers are analyzed with respect to their polarization splitting/combining …