Compact silicon microring-assisted directional couplers for optical signal processing applications.
Optics Letters (2009)
- PubMed: 19370133
Available from www.ncbi.nlm.nih.gov
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Abstract
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.
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