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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
DOI: 10.1364/oe.20.010796
Citations: 20 ( - last update: 16/6/2024)
13 (OpenCitations - last update: 3/5/2024)
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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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