Reconfigurable silicon filter with continuous bandwidth tunability

Piero Orlandi, Carlo Ferrari, Michael Strain, Antonio Canciamilla, Francesco Morichetti, Marc Sorel, Paolo Bassi, Andrea Melloni

Research output: Contribution to journalArticlepeer-review

45 Citations (Scopus)
13 Downloads (Pure)


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.
Original languageEnglish
Pages (from-to)3669-3671
Number of pages3
JournalOptics Letters
Issue number17
Publication statusPublished - 1 Sep 2012


  • gridless networking
  • reconfigurable silicon filter
  • bandwidth tunability


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