Ultracompact polarization beam splitter based on a dielectric-hybrid plasmonic-dielectric coupler.
ABSTRACT An ultracompact polarization beam splitter (PBS) based on a dielectric-hybrid plasmonic-dielectric coupler is proposed. The device utilizes the polarization-dependent nature of hybrid plasmonic waveguides. By choosing proper waveguide parameters, a 2×5.1 μm2 PBS (including S-bends) with extinction ratios over 15 dB and insertion losses below 1.5 dB in the full C-band should be achievable. The effect of fabrication errors is also investigated.
IEEE Journal of Selected Topics in Quantum Electronics 07/2015; 21(4):1-8. DOI:10.1109/JSTQE.2014.2346623 · 3.47 Impact Factor
Article: Bow-Tie Hybrid Plasmonic Waveguides[Show abstract] [Hide abstract]
ABSTRACT: We propose a hybrid plasmonic waveguide that incorporates a semiconductor-insulator-metal bow-tie configuration within a low-index gap guarded by semiconductor and metallic nanostructures. Ultratight field confinement (Aeff ~λ2 3100 - λ2/120) in conjunction with reasonable propagation distance (L ~ 56-138 μm) can be achieved simultaneously at a telecommunication wavelength. Compared to a conventional hybrid waveguide, the effective mode area and propagation loss of a typical bow-tie hybrid configuration are reduced by 2-89% and 34-62%, respectively, whereas the figure of merit is enhanced by 53-700%, along with increased power ratio inside the gap region for small gap cases. Studies on fabrication tolerance, waveguide crosstalk, and loss compensation reveal its robust property for practical implementations and remarkable feasibility to realize ultracompact passive and active components. Moreover, we also reveal the broadband feature of the waveguide and show that its concept can be applicable to various other metallic configurations as well, which may open up possibilities for the inventions of numerous high-performance plasmon waveguides and components.Journal of Lightwave Technology 12/2014; 32(23):4504-4509. DOI:10.1109/JLT.2014.2359916 · 2.86 Impact Factor
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ABSTRACT: We review the emergence and development of integrated photonics and its status today. The treatise is focused on information and communications technology (ICT) applications, but the technology is generically employable for a wealth of other applications, such as sensors. General properties of the waveguides that form the basis of integrated photonics are reviewed, and several examples of integrated photonics based on silicon and plasmonics are presented. The all-important development of integrated low-power nanophotonics is discussed and current challenges and prospects of the field are elucidated. The treatment is focused on the photonic fabric between source and detector.04/2014; 2(2). DOI:10.1364/PRJ.2.000075