Resonant cavity based antireflection structures for surface plasmon waveguides |
| |
Authors: | J Liu H Zhao Y Zhang S Liu |
| |
Institution: | (1) School of Mechanical Engineering, Yonsei University, 134 Shinchon-dong, Seodaemun-Gu, Seoul, 120-749, Korea;(2) Korea Institute of Industrial Technology (KITECH), Bucheon-si, Kyunggi-do, Korea; |
| |
Abstract: | The concept of antireflection coating in the theory of multilayer films is introduced to the two-dimensional metal–insulator–metal
(MIM) structures to realize total transmission of optical energy at the waveguide discontinuities. The antireflection structure
consists of a resonant cavity which is constructed by changing the insulator width of the waveguide. A numerical method is
used to achieve the optimal design directly. A T-splitter with zero reflection is proposed, utilizing a cavity structure in the input waveguide. A transformer with enhanced
transmission between different waveguides is presented for further validating the efficiency and generality of these cavity
based antireflection structures. The simulation results show that such a structure can realize a perfect antireflection function. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|