Compact silicon microring-assisted directional couplers for optical signal processing applications.
We propose and demonstrate a compact microring-assisted directional coupler in the silicon-on-insulator material system. An analytical model based on the strongly coupled mode theory shows that the device can be designed to have a wide range of spectral characteristics, including sharp asymmetric Fano line shapes, which can be used for WDM, switching, and sensing applications. The measured transmission spectra of the fabricated device with a 5-mum-radius microring resonator exhibited an asymmetric spectral response characteristic of the Fano resonance as predicted by the analytical model.
Department of Electrical and Computer Engineering, University of Alberta Edmonton, Alberta T6G 2V4, Canada. ashok.prabhu@ualberta.ca
Ashok M
AM
Prabhu
Vien
V
Van
Warren N
WN
Herman
Ping-Tong
PT
Ho
D008855:Microscopy, Electron, Scanning; D055095:Optics and Photonics / Q000295:instrumentation*; D012825:Silicon
D012825:Silicon