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Authors: M. Lauermann, C. Weimann, A. Knopf, W. Heni, R. Palmer, D.L. Elder, W. Bogaerts, J. Leuthold, L.R. Dalton, C. Rembe, W. Freude, C. Koos
Title: Integrated optical frequency shifter in silicon-organic hybrid (SOH) technology
Format: International Journal
Publication date: 5/2016
Journal/Conference/Book: Optics Express
Volume(Issue): 24(11) p.11694-11707
DOI: 10.1364/OE.24.011694
Citations: 22 (Web of Knowledge / Dimensions.ai - last update: 27/9/2020)
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Abstract

We demonstrate for the first time a waveguide-based frequency shifter on the silicon photonic platform using single-sideband modulation. The device is based on silicon-organic hybrid (SOH) electro-optic modulators, which combine conventional silicon-on-insulator waveguides with highly efficient electro-optic cladding materials. Using small-signal modulation, we demonstrate frequency shifts of up to 10 GHz. We further show large-signal modulation with optimized waveforms, enabling a conversion efficiency of −5.8 dB while suppressing spurious side-modes by more than 23 dB. In contrast to conventional acousto-optic frequency shifters, our devices lend themselves to large-scale integration on silicon substrates, while enabling frequency shifts that are several orders of magnitude larger than those demonstrated with all-silicon serrodyne devices.

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