title: Broadband microwave photonic fully tunable filter using a single heterogeneously integrated III-V/SOI-microdisk-based phase shifter.
abstract: A broadband microwave photonic phase shifter based on a single III-V microdisk resonator heterogeneously integrated on and coupled to a nanophotonic silicon-on-insulator waveguide is reported. The phase shift tunability is accomplished by modifying the effective index through carrier injection. A comprehensive semi-analytical model aiming at predicting its behavior is formulated and confirmed by measurements. Quasi-linear and continuously tunable 2π phase shifts at radiofrequencies greater than 18 GHz are experimentally demonstrated. The phase shifter performance is also evaluated when used as a key element in tunable filtering schemes. Distortion-free and wideband filtering responses with a tuning range of ~100% over the free spectral range are obtained.
authors.affiliation: ITEAM Research Institute, Universitat Politècnica de València, València, Spain. jualloso@iteam.upv.es
authors.forename: Juan
authors.initials: J
authors.lastname: Lloret
authors.forename: Geert
authors.initials: G
authors.lastname: Morthier
authors.forename: Francisco
authors.initials: F
authors.lastname: Ramos
authors.forename: Salvador
authors.initials: S
authors.lastname: Sales
authors.forename: Dries
authors.initials: D
authors.lastname: Van Thourhout
authors.forename: Thijs
authors.initials: T
authors.lastname: Spuesens
authors.forename: Nicolas
authors.initials: N
authors.lastname: Olivier
authors.forename: Jean-Marc
authors.initials: JM
authors.lastname: Fédéli
authors.forename: José
authors.initials: J
authors.lastname: Capmany