|Authors: ||Joan Lloret, G. Morthier, Francisco Ramos, Salvador Sales, D. Van Thourhout, T. Spuesens, Nicolas Olivier, Jean-Marc Fedeli, Jose Capmany|
|Title: ||Broadband microwave photonic fully tunable filter using a single heterogeneously integrated III-V/SOI-microdisk-based phase shifter|
|Format: ||International Journal|
|Publication date: ||4/2012|
|Journal/Conference/Book: ||Optics Express
|Volume(Issue): || p.10796-10806|
|Internal Reference: ||[N-1347]|
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 2ð 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.
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