Finite-Difference Time-Domain Study of Guided Modes in Nano-plasmonic Waveguides

Details Finite-Difference Time-Domain Study of Guided Modes in Nano-plasmonic Waveguides Finite-Difference Time-Domain Study of Guided Modes in Nano-plasmonic Waveguides

2006-08-02

arxiv.org/abs/cond-mat/0608058v4

Physics

Condensed Matter

Other Condensed Matter

6 pages, 10 figures, accepted for publication, IEEE Trans. Antennas Propagat

Scientific paper

10.1109/TAP.2007.908370

A conformal dispersive finite-difference time-domain (FDTD) method is developed for the study of one-dimensional (1-D) plasmonic waveguides formed by an array of periodic infinite-long silver cylinders at optical frequencies. The curved surfaces of circular and elliptical inclusions are modelled in orthogonal FDTD grid using effective permittivities (EPs) and the material frequency dispersion is taken into account using an auxiliary differential equation (ADE) method. The proposed FDTD method does not introduce numerical instability but it requires a fourth-order discretisation procedure. To the authors' knowledge, it is the first time that the modelling of curved structures using a conformal scheme is combined with the dispersive FDTD method. The dispersion diagrams obtained using EPs and staircase approximations are compared with those from the frequency domain embedding method. It is shown that the dispersion diagram can be modified by adding additional elements or changing geometry of inclusions. Numerical simulations of plasmonic waveguides formed by seven elements show that row(s) of silver nanoscale cylinders can guide the propagation of light due to the coupling of surface plasmons.

Affiliated with

Also associated with

No associations

Rating

Finite-Difference Time-Domain Study of Guided Modes in Nano-plasmonic Waveguides does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Finite-Difference Time-Domain Study of Guided Modes in Nano-plasmonic Waveguides, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finite-Difference Time-Domain Study of Guided Modes in Nano-plasmonic Waveguides will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-264511