Integration of periodic, sub‐wavelength structures in silicon‐on‐insulator photonic device design

Y D'Mello, O Reshef, S Bernal, E El‐fiky… - IET …, 2020‏ - Wiley Online Library
Rapid advances in high‐resolution chip lithography have accelerated nanophotonic device
development on the silicon‐on‐insulator (SOI) platform. The ability to create sub …

Compact high-performance adiabatic 3-dB coupler enabled by subwavelength grating slot in the silicon-on-insulator platform

L Xu, Y Wang, A Kumar, E El-Fiky, D Mao… - Optics express, 2018‏ - opg.optica.org
We demonstrate a compact high-performance adiabatic 3-dB coupler for the silicon-on-
insulator platform. The refractive index of the gap region between two coupling waveguides …

Dual-mode broadband compact 2× 2 optical power splitter using sub-wavelength metamaterial structures

H Shiran, G Zhang, O Liboiron-Ladouceur - Optics express, 2021‏ - opg.optica.org
The multimode power splitter is a fundamental component in mode-division multiplexed
systems. In this paper, we design and characterize a broadband compact dual-mode …

Temperature-insensitive and low-loss single-mode silicon waveguide crossing covering all optical communication bands enabled by curved anisotropic metamaterial

J Zhang, L Xu, D Mao, Y D'Mello, Z Wei, W Li… - …, 2023‏ - degruyter.com
We propose two designs of low-loss and temperature-insensitive single-mode waveguide
crossing on silicon-on-insulator (SOI) platform with 415-nm operation bandwidth covering all …

All-silicon multi-band TM-pass polarizer on a 220 nm SOI enabled by multiplexing grating regimes

J Zhang, L Xu, D Mao, Y D'Mello, W Li, S Lessard… - Optics …, 2021‏ - opg.optica.org
We propose an all-silicon design of a multi-band transverse-magnetic-pass (TM-pass)
polarizer. The device is based on one-dimensional gratings that work under different …

Ultra-broadband and compact two-mode multiplexer based on subwavelength-grating-slot-assisted adiabatic coupler for the silicon-on-insulator platform

L Xu, Y Wang, D Mao, J Zhang, Z **ng… - Journal of Lightwave …, 2019‏ - ieeexplore.ieee.org
We design and experimentally demonstrate an ultra-broadband and compact two-mode
multiplexer based on subwavelength-grating-slot-assisted adiabatic coupler for the silicon …

Broadband 1310/1550 nm wavelength demultiplexer based on a multimode interference coupler with tapered internal photonic crystal for the silicon-on-insulator …

L Xu, Y Wang, D Mao, E El-Fiky, Z **ng, A Kumar… - Optics Letters, 2019‏ - opg.optica.org
We design and experimentally demonstrate a broadband 1310/1550 nm wavelength
demultiplexer based on a multimode interference coupler with a tapered internal photonic …

Deterministic design of focusing apodized subwavelength grating coupler based on weak form and transformation optics

S Li, L Cai, D Gao, J Dong, J Hou, C Yang, S Chen… - Optics express, 2020‏ - opg.optica.org
The focusing apodized subwavelength grating coupler (F-ASGC) has advantages of high
coupling efficiency, small footprint and simple fabrication process, which make it a popular …

High-extinction-ratio and compact 1310/1550 nm wavelength diplexer on SOI platform based on an SWG-structured two-mode interference coupler

J Zhang, L Xu, D Mao, Z **ng, Y D'Mello… - IEEE Photonics …, 2022‏ - ieeexplore.ieee.org
We propose a 1310/1550 nm wavelength diplexer on a 220-nm silicon-on-insulator (SOI)
platform. The device is based on a compact two-mode interference (TMI) coupler enabled by …

Performance Evaluation of Backside Emitting O-Band Grating Couplers for 100-m-Thick Silicon Photonics Interposers

N Mangal, J Missinne, G Van Steenberge… - IEEE Photonics …, 2019‏ - ieeexplore.ieee.org
Most of the single-mode fiber-coupled grating couplers reported in the literature have been
designed for upward directionality to perform wafer-scale testing of photonic-integrated …