We present the design and the fabrication of compact tunable silicon-on-insulator bandpass filters based on the integration of a Mach–Zehnder interferometer with ring resonators and activated via thermo-optic phase shifters. The proposed architecture provides wide filter bandwidth tunability from 10% to 90% of the free spectral range preserving the filter off-band rejection. Possible applications are channel subset selection in wavelength division multiplexing optical systems, adaptive filtering to signal bandwidth, and reconfigurable filters for gridless networking.
- gridless networking
- reconfigurable silicon filter
- bandwidth tunability
Orlandi, P., Ferrari, C., Strain, M., Canciamilla, A., Morichetti, F., Sorel, M., Bassi, P., & Melloni, A. (2012). Reconfigurable silicon filter with continuous bandwidth tunability. Optics Letters, 37(17), 3669-3671. https://doi.org/10.1364/OL.37.003669