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題名 Dispersion relation, propagation length and mode conversion of surface plasmon polaritons in silver double-nanowire systems
作者 郭光宇
Sun, Shulin ; Chen, Hung-Ting ; Zheng, Wei-Jin ; Guo, Guang-Yu
貢獻者 應物所
日期 2013.06
上傳時間 6-Dec-2013 14:29:32 (UTC+8)
摘要 We study the surface plasmon modes in a silver double-nanowire system by employing the eigenmode analysis approach based on the finite element method. Calculated dispersion relations, surface charge distributions, field patterns and propagation lengths of ten lowest energy plasmon modes in the system are presented. These ten modes are categorized into three groups because they are found to originate from the monopole-monopole, dipole-dipole and quadrupole-quadrupole hybridizations between the two wires, respectively. Interestingly, in addition to the well studied gap mode (mode 1), the other mode from group 1 which is a symmetrically coupled charge mode (mode 2) is found to have a larger group velocity and a longer propagation length than mode 1, suggesting mode 2 to be another potential signal transporter for plasmonic circuits. Scenarios to efficiently excite (inject) group 1 modes in the twowire system and also to convert mode 2 (mode 1) to mode 1 (mode 2) are demonstrated by numerical simulations.
關聯 Optics Express, 21(12), 14591 - 14605
資料類型 article
DOI http://dx.doi.org/10.1364/OE.21.014591
dc.contributor 應物所en_US
dc.creator (作者) 郭光宇zh_TW
dc.creator (作者) Sun, Shulin ; Chen, Hung-Ting ; Zheng, Wei-Jin ; Guo, Guang-Yuen_US
dc.date (日期) 2013.06en_US
dc.date.accessioned 6-Dec-2013 14:29:32 (UTC+8)-
dc.date.available 6-Dec-2013 14:29:32 (UTC+8)-
dc.date.issued (上傳時間) 6-Dec-2013 14:29:32 (UTC+8)-
dc.identifier.uri (URI) http://nccur.lib.nccu.edu.tw/handle/140.119/62212-
dc.description.abstract (摘要) We study the surface plasmon modes in a silver double-nanowire system by employing the eigenmode analysis approach based on the finite element method. Calculated dispersion relations, surface charge distributions, field patterns and propagation lengths of ten lowest energy plasmon modes in the system are presented. These ten modes are categorized into three groups because they are found to originate from the monopole-monopole, dipole-dipole and quadrupole-quadrupole hybridizations between the two wires, respectively. Interestingly, in addition to the well studied gap mode (mode 1), the other mode from group 1 which is a symmetrically coupled charge mode (mode 2) is found to have a larger group velocity and a longer propagation length than mode 1, suggesting mode 2 to be another potential signal transporter for plasmonic circuits. Scenarios to efficiently excite (inject) group 1 modes in the twowire system and also to convert mode 2 (mode 1) to mode 1 (mode 2) are demonstrated by numerical simulations.en_US
dc.format.extent 8774917 bytes-
dc.format.mimetype application/pdf-
dc.language.iso en_US-
dc.relation (關聯) Optics Express, 21(12), 14591 - 14605en_US
dc.title (題名) Dispersion relation, propagation length and mode conversion of surface plasmon polaritons in silver double-nanowire systemsen_US
dc.type (資料類型) articleen
dc.identifier.doi (DOI) 10.1364/OE.21.014591en_US
dc.doi.uri (DOI) http://dx.doi.org/10.1364/OE.21.014591en_US