# Compact grating coupler using asymmetric waveguide scatterers

## TL;DR

This paper introduces a new grating coupler design utilizing asymmetric waveguide scatterers to improve the efficiency of coupling light into silicon waveguides from normal incidence.

## Contribution

The paper presents a novel grating coupler design with double asymmetric and vertically oriented scatterers for enhanced coupling efficiency.

## Key findings

- Efficient coupling of normally incident light to silicon waveguides.
- Novel design with asymmetric waveguide scatterers improves performance.
- Potential for integration in photonic circuits.

## Abstract

We demonstrate a novel grating coupler design based on double asymmetric and vertically oriented waveguide scatterers to efficiently couple normally incident light to a fundamental mode silicon waveguide laying on a buried oxide layer.