Embedded slanted grating for vertical coupling between fibers and silicon-on-insulator planar waveguides
Year: 2005
Type: article
Abstract: We propose a compact and efficient grating coupler for vertical coupling between optical fibers and planar waveguides. A grating with a parallelogram shape is designed to be etched through the entire high-index waveguide core. The coupler is optimized using a microgenetic algorithm coupled with a two-dimensional finite-difference time-domain method. Simulations show that up to 75.8% coupling efficiency can be obtained between a single-mode fiber and a 240-nm-thick silicon-on-insulator planar waveguide.
Authors: Bin Wang, Jianhua Jiang, G.P. Nordin
Institutions: University of Alabama, University of Alabama in Huntsville
Language: English
Topic: Photonic and Optical Devices
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2134583744