Acta Optica Sinica, Volume. 31, Issue 10, 1024001(2011)
Dispersion of Surface Plasmon Modes in Coaxial Dielectric-Metal-Dielectric Structure
The dispersion relation for coaxial dielectric-metal-dielectric structure by making an explicit connection with the planar dielectric-metal-dielectric structure is obtained. Each mode splits into a high effective refractive index branch and a low effective refractive index branch. An intuitive picture that allows for a qualitative understanding is provided. The effective refractive indexes and propagation losses of the modes are calculated by using the analytical dispersion expression. They fit well with the numerical simulation results obtained by using finite element method in the range of 0.5~1.5 μm. The results the applicability of the dispersion equation are also analyed.
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Peng Yang, Hou Jing, Lu Qisheng. Dispersion of Surface Plasmon Modes in Coaxial Dielectric-Metal-Dielectric Structure[J]. Acta Optica Sinica, 2011, 31(10): 1024001
Category: Optics at Surfaces
Received: Apr. 25, 2011
Accepted: --
Published Online: Sep. 20, 2011
The Author Email: Yang Peng (pynudt@yahoo.com.cn)