We demonstrate a simple, direct measurement of propagation losses in single silver nanowires. Using a waveguiding nanoscale fiber taper for highly efficient launching, propagation surface plasmon polaritons are excited in the silver nanowire with high efficiency. The output intensity as light radiation at the end of the nanowire is quantified with high accuracy and repeatability. A typical propagation loss of 0.41 dB/(mu)m (for 633 nm light) in a 260 nm diameter silver nanowire is obtained, which suggests that the propagation loss of a single silver nanowire could be lower than previously reported experimental results and should be much lower than those obtained by theoretical calculations.
展开▼
机译：我们展示了一种简单，直接的测量单银纳米线中传播损耗的方法。使用波导纳米级光纤锥度进行高效发射，可在银纳米线中高效激发传播表面等离子体激元极化子。纳米线末端的光辐射输出强度可以高精度和可重复性进行量化。在直径为260 nm的银纳米线中，典型的传播损耗为0.41 dB /μm（对于633 nm光），这表明单条银纳米线的传播损耗可能低于先前报道的实验结果，应为远低于理论计算得出的结果。
展开▼
