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Direct measurement of plasmon propagation length of Ag nanowire waveguide via polymer nanofiber launching
作者:Xianrui Meng, et al
关键字:Ag nanowire, Plasmon Nanofiber, Waveguide
论文来源:期刊
具体来源:Optics Communications, 2018, 423, 152-154
发表时间:2018年

We demonstrate a simple, direct measurement of plasmon propagation length of Ag nanowire waveguide. Using dye-doped polymer nanofiber for launching, propagating surface plasmon polaritons on multiple silver nanowires are efficiently excited under wide-field illumination. By monitoring the length dependence of the intensity of scattering light at the nanowire ends, a typical plasmon propagation length of 15.1 um in Ag nanowire with 120 nm in diameter is directly extracted. Photon–plasmon coupling efficiency of about 40% is determined, which is independent of the orientation of Ag nanowire.