Impedance Matching Induce High Transmission and Flat Response Band-Pass Plasmonic Waveguides
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We consider a model utilizing the concept of impedance matching, which can be applied to design the coupled cascaded plasmonic cavity waveguide with desired properties. We use a transfer matrix method to obtain its transmission and dispersion diagrams. Base on this method, we demonstrate that a band-pass metal–dielectric–metal plasmonic filter with quasi-flat group velocity and tunable bandwidth can be achieved.
KeywordsSurface plasmons Impedance matching Wavelength filtering
Y. Xu acknowledges the partial support from the China Scholarship Council and the Nonlinear Research Centre at ANU. The work of A.E. Miroshnichenko was supported by the Australian Research Council. L.J. Wu and S. Lan acknowledge the financial support from the National Natural Science Foundation of China (grant nos.10774050 and 10974060) and the Program for Innovative Research Team of the Higher Education in Guangdong (grant no. 06CXTD005).