J4 ›› 2012, Vol. 29 ›› Issue (2): 252-256.

• Fiber and Waveguide Optics • Previous Articles    

Investigation on propagation loss of silver nanowire plasmonic waveguides

CHEN Jin-bin, LU Yong-hua, TAO Jun, YI Ming-fang, WANG Pei, MING Hai   

  1. Department of Optics and Optical Engineering, University of Science and Technology of China, Hefei  230026, China
  • Received:2011-03-31 Revised:2011-04-29 Published:2012-03-28 Online:2012-02-28

Abstract:

By the far field excitation and measurement, propagation loss of wire’s surface plasmon is experimentally investigated with structure of branched-routing silver nanowire. The experimental results disclose the propagation loss depending on the exciting wavelength. The coefficient of propagation loss is measured as 0.115 at 632.8nm and 0.0923 at 780nm. The propagation loss is smaller at longer wavelength, that is, SPP can propagate further at long-wavelength laser exciting. Our measurement will contribute to optimizing plasmonic devices based on silver nanowire waveguides.

Key words: optoelectronics, silver nanowire, surface plasmon, propagation loss

CLC Number: