Expression of Concern: Efficient Simulation of Subwavelength Plasmonic Waveguides Using Implicitly Restarted Arnoldi

A full-vector finite difference method has been proposed to solve for the purely bounded optical modes for propagation in one and two dimensional subwavelength plasmonic waveguides. We have used The Implicitly Restarted Arnoldi method to directly calculate for the propagation properties of the dominant modes. The method has low computational complexity and can be applied to complex structures to solve for bounded modes, and it automatically separates dissipateive and propagating modes.