Direct measurement of plasmon propagation length of Ag nanowire waveguide via polymer nanofiber launching

作者：Meng, Xianrui; Zhu, Weiwei; Li, Hanmei; Zhai, Cuiping^*; Zhang, Wenkai^*

来源：Optics Communications, 2018, 423: 152-154.

DOI：10.1016/j.optcom.2018.04.013

• Ag nanowire
• Plasmon
• Nanofiber
• Waveguide

Herein, 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 +/- 1.0 mu m 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.

• 出版日期2018-9-15
• 单位河南大学