151 citations · 236 across the 13 of their papers we have counts for
14 papers
Perfectly vertical silicon metamaterial grating couplers with large segmentation periods up to 650 nm
Jianhao Zhang, Daniele Melati, Yuri Grinberg +7
Perfectly vertical grating couplers leveraging metamaterials can achieve both high coupling efficiency and minimal back reflection. The fabricability of these designs, with segment…
Optical wavefront phase-tilt measurement using Si-photonic waveguide grating couplers
Siegfried Janz, Dan-Xia Xu, Yuri Grinberg +5
Silicon photonic wavefront phase-tilt sensors for wavefront monitoring using surface coupling grating arrays are demonstrated. The first design employs the intrinsic angle dependen…
Subwavelength grating metamaterial waveguides and ring resonators on a silicon nitride platform
Cameron M. Naraine, Jocelyn N. Westwood-Bachman, Cameron Horvath +5
We propose and demonstrate subwavelength grating (SWG) metamaterial waveguides and ring resonators on a silicon nitride platform for the first time. The SWG waveguide is engineered…
Highly efficient ultra-broad beam silicon nanophotonic antenna based on near-field phase engineering
Shahrzad Khajavi, Daniele Melati, Pavel Cheben +3
Optical antennas are a fundamental element in optical phased arrays (OPA) and free-space optical interconnects. An outstanding challenge in optical antenna design lies in achieving…
PCA-Boosted Autoencoders for Nonlinear Dimensionality Reduction in Low Data Regimes
Muhammad Al-Digeil, Yuri Grinberg, Daniele Melati3 +5
Autoencoders (AE) provide a useful method for nonlinear dimensionality reduction but are ill-suited for low data regimes. Conversely, Principal Component Analysis (PCA) is data-eff…
Athermal and tunable echelle grating wavelength demultiplexers using a Mach-Zehnder interferometer launch structure
Daniele Melati, Dan-Xia Xu, Ross Cheriton +5
We present a comparative experimental study of three silicon photonic echelle grating demultiplexers that are integrated with a Mach-Zehnder interferometer (MZI) launch structure.…