Group Velocity Dispersion of 1-D Plasmon Waveguides

The group delay and the group velocity dispersion (GVD) of surface mode supported by 1-D plasmon waveguides are proposed by derivative action directly on the eigenvalue equation. Influences of structure parameter d and wavelength λ on the propagation constant, the group delay and the group velocity dispersion are discussed. The results show that different GVD can be obtained by changing structure parameter d of plasmon waveguides and working wavelength λ. GVD of IMIs has wider range than that of MIMs and IMIa. The results offer the theoretical foundation for the propagation of optical soliton in nonlinear plasmon waveguides.