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Open AccessArticle

Comparative Study of Nano-Slot Silicon Waveguides Covered by Dye Doped and Undoped Polymer Cladding

1
Research Group for Photonics, Laser and Plasmatechnologies, Technical University of Applied Sciences Wildau, Hochschulring 1, 15745 Wildau, Germany
2
IHP—Leibniz-Institut für Innovative Mikroelektronik, Im Technologiepark 25, 15236 Frankfurt (Oder), Germany
*
Author to whom correspondence should be addressed.
Appl. Sci. 2019, 9(1), 89; https://doi.org/10.3390/app9010089
Received: 17 November 2018 / Revised: 11 December 2018 / Accepted: 20 December 2018 / Published: 27 December 2018
(This article belongs to the Special Issue Frontiers in Nanophotonics 2019)
Nonlinear optical dyes doped in optical polymer matrices are widely used for electro-optical devices. Linear optical properties change with dye concentration, which leads to a change in modal properties, especially in nano-structured integrated waveguides such as silicon slot-waveguides. Here, we investigate the influence of a nonlinear optical dye on the performance of a silicon-organic hybrid slot-waveguide. A simulation study of the modal and optical confinement properties is carried out and dependence of the structural parameters of the slot-waveguide and the organic cladding material is taken into account. As cladding material, a guest-host polymer system is employed comprising the nonlinear optical dye Disperse Red 1 (DR1) doped in a poly[methyl methacrylate] (PMMA) matrix. The refractive indices of doped and undoped PMMA were deduced from ellipsometric data. We present a guideline for an optimized slot-waveguide design for the fabrication in silicon-on-insulator technology giving rise to scalable, high-performance integrated electro-optical modulators. View Full-Text
Keywords: silicon photonics; modeling and simulation at the nanoscale; nonlinear optics at the nanoscale; slot waveguides; silicon-on-insulator technology silicon photonics; modeling and simulation at the nanoscale; nonlinear optics at the nanoscale; slot waveguides; silicon-on-insulator technology
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Bondarenko, S.; Villringer, C.; Steglich, P. Comparative Study of Nano-Slot Silicon Waveguides Covered by Dye Doped and Undoped Polymer Cladding. Appl. Sci. 2019, 9, 89.

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