title: Reconfigurable silicon filter with continuous bandwidth tunability.
abstract: 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.
authors.affiliation: Dipartimento di Elettronica, Informatica e Sistemistica, Università di Bologna, Bologna 40136, Italy. piero.orlandi@unibo.it
authors.forename: Piero
authors.initials: P
authors.lastname: Orlandi
authors.forename: Carlo
authors.initials: C
authors.lastname: Ferrari
authors.forename: Michael John
authors.initials: MJ
authors.lastname: Strain
authors.forename: Antonio
authors.initials: A
authors.lastname: Canciamilla
authors.forename: Francesco
authors.initials: F
authors.lastname: Morichetti
authors.forename: Marc
authors.initials: M
authors.lastname: Sorel
authors.forename: Paolo
authors.initials: P
authors.lastname: Bassi
authors.forename: Andrea
authors.initials: A
authors.lastname: Melloni