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Proceedings Paper

Analysis of a polarization-independent nonlinear cross-slot waveguide with Fourier Modal Method (FMM)
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Paper Abstract

We propose the Fourier Modal Method (FMM) as a convenient numerical tool for the design and analysis of nonlinear optical waveguides. The scope of this work includes the design of a polarization-independent nonlinear cross-slot waveguide for telecommunication applications at the wavelength of 1550 nm. The FMM method has been implemented, obeying the proper Fourier factorization rules, within a MATLABTM environment. The influence of the modal field intensity on the transverse refractive index distribution due to the optical Kerr effect is modeled with FMM for a propagation invariant scheme of the waveguide. The waveguide is geometrically optimized for an enhanced nonlinear light matter interaction. A silicon-inorganic hybrid material platform based on hydrogenated amorphous silicon (a-Si:H) and amorphous titanium dioxide (TiO2) is considered for the mentioned waveguide. With the optimized design of the waveguide, the achieved value of the nonlinear waveguide parameter (γ) is 4.678 × 104 W-1Km-1.

Paper Details

Date Published: 1 May 2014
PDF: 10 pages
Proc. SPIE 9133, Silicon Photonics and Photonic Integrated Circuits IV, 913313 (1 May 2014); doi: 10.1117/12.2048994
Show Author Affiliations
Somnath Paul, Univ. of Eastern Finland (Finland)
Jani Tervo, Univ. of Eastern Finland (Finland)
Seppo Honakanen, Univ. of Eastern Finland (Finland)

Published in SPIE Proceedings Vol. 9133:
Silicon Photonics and Photonic Integrated Circuits IV
Laurent Vivien; Seppo Honkanen; Lorenzo Pavesi; Stefano Pelli; Jung Hun Shin, Editor(s)

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