The unidirectional excitation of surface plasmon polaritons (SPPs) in a novel configuration is numerically investigated by the finite-difference time-domain method. It is found that the transmission varies periodically with the increase of distance between the nanodisk resonator and horizontal nanoslit, which can be interpreted by the interference theory. The operating wavelength of this structure can be tuned by altering the refractive index of the nanodisk resonator. This subwavelength-scale structure exhibits high transmission (similar to 58%) due to the constructive interference of the SPP modes, and thus can find important applications on the manipulation of SPP excitation in highly integrated optical circuits. (C) 2012 Elsevier B.V. All rights reserved.
Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
推荐引用方式 GB/T 7714
Wang, Guoxi,Lu, Hua. Unidirectional excitation of surface plasmon polaritons in T-shaped waveguide with nanodisk resonator[J]. OPTICS COMMUNICATIONS,2012,285(21-22):4190-4193.
APA
Wang, Guoxi,&Lu, Hua.(2012).Unidirectional excitation of surface plasmon polaritons in T-shaped waveguide with nanodisk resonator.OPTICS COMMUNICATIONS,285(21-22),4190-4193.
MLA
Wang, Guoxi,et al."Unidirectional excitation of surface plasmon polaritons in T-shaped waveguide with nanodisk resonator".OPTICS COMMUNICATIONS 285.21-22(2012):4190-4193.
; Lu, Hua
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