4.7 Article

Silicon-Organic Hybrid Electro-Optical Devices

Publisher

IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSTQE.2013.2271846

Keywords

Integrated optics; silicon; organic materials; liquid crystals; nanophotonics; elecrooptic modulators

Funding

  1. EU-FP7 Project SOFI [248609]
  2. BMBF joint project MISTRAL
  3. DFG Center for Functional Nanostructures
  4. Helmholtz International Research School on Teratronics (HIRST)
  5. Karlsruhe School of Optics and Photonics (KSOP)
  6. Karlsruhe Nano-Micro Facility
  7. European Research Council (ERC Starting Grant 'EnTeraPIC') [280145]

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Organic materials combined with strongly guiding silicon waveguides open the route to highly efficient electro-optical devices. Modulators based on the so-called silicon-organic hybrid (SOH) platform have only recently shown frequency responses up to 100 GHz, high-speed operation beyond 112 Gbit/s with fJ/bit power consumption. In this paper, we review the SOH platform and discuss important devices such as Mach-Zehnder and IQ-modulators based on the linear electro-optic effect. We further show liquid-crystal phase-shifters with a voltage-length product as low as V pi L = 0.06 V.mm and sub-mu W power consumption as required for slow optical switching or tuning optical filters and devices.

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