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.
Prabhu
Ashok M
AM
Department of Electrical and Computer Engineering, University of Alberta Edmonton, Alberta T6G 2V4, Canada. ashok.prabhu@ualberta.ca
Van
Vien
V
Herman
Warren N
WN
Ho
Ping-Tong
PT
D008855:Microscopy, Electron, Scanning; D055095:Optics and Photonics / Q000295:instrumentation*; D012825:Silicon
D012825:Silicon