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Strategies in Reduction of Power Leakage from Three-dimensional Plamsmonic Circuits Based on Planar Arrangement

Dorche, Ali Eshaghian | 2014

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 45877 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Mehrany, Khashayar
  7. Abstract:
  8. The focus of this thesis is on reduction of power leakage from bent structures formed by three-dimensional plasmonic waveguides. Since plasmonic waveguides should meet certain conditions to be appropriate for future plasmonic integrated circuits, bunch of hitherto reported plasmonic waveguides are considered and only two of them, viz. plasmonic slot and square coaxial, are selected as suitable candidates for further studies.
    Transmission efficiency of sharp bend and dead-end formed in structures based on plasmonic slot waveguides are significantly improved by introducing easy-to-fabricate defects that eliminate in- and out-of-plane power leakage. Afterward, the plasmonic square coaxial structure is considered. The transverse resonance technique is employed to extract the fundamental mode of this structure. To this end, a transverse equivalent network is proposed, and the sought-after complex propagation constant is easily found by resorting to the resonance condition in the equivalent network. Furthermore, approximate characteristic impedance is attributed to the plasmonic square coaxial waveguide. In this fashion, passive structures such as T-splitter and stubs formed in integrated circuits based on plasmonic square coaxial waveguide are easily studied. Finally, a new type of plasmonic waveguide is proposed whose characteristics are better than that of the others. This superiority is proved by studying sharp bends and T-splitters formed by the proposed structure
  9. Keywords:
  10. PLasmonic Structure ; Three Dimensional Integration ; Plasmonic Waveguides ; Power Leakage ; Propagation Mode

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