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Propagation and dual-localization of surface plasmon polaritons in a quasiperiodic metal heterowaveguide

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3 Author(s)
Zhou, Lin ; National Laboratory of Solid State Microstructures, Nanjing University, Nanjing 210093, People’s Republic of China ; Yu, Xiao-qiang ; Zhu, Yong-yuan

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Based on the transfer matrix method and the finite-difference time-domain analysis, we investigate the propagation and scattering of surface plasmon polaritons (SPPs) in a quasiperiodic metal heterowaveguide. By selecting appropriate thickness of the defect layer, the two SPP modes can be adjusted to localize at around 1310 and 1550 nm simultaneously. The numerical results reveal that the realization of miniaturized photonic devices is feasible at the two important telecommunicate wavelengths. The structure can be applied to the double-band plasmon Bragg reflector, double-channel light emitters and filters.

Published in:

Applied Physics Letters  (Volume:89 ,  Issue: 5 )