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Frequency-Dependent 3-D LOD-FDTD Method for the Analysis of Plasmonic Devices

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4 Author(s)
Shibayama, J. ; Fac. of Sci. & Eng., Hosei Univ., Tokyo, Japan ; Ando, R. ; Yamauchi, J. ; Nakano, H.

A simple trapezoidal recursive convolution technique is utilized to develop a frequency-dependent locally one-dimensional finite-difference time-domain (FDTD) method for the three-dimensional analysis of dispersive media. A gap plasmonic waveguide is analyzed and the numerical results are compared with those of the traditional explicit FDTD. A time step ten times as large as that determined from the stability criterion can be allowed to reduce computational time by 40%, offering acceptable numerical results. A plasmonic grating is analyzed as an application.

Published in:

Photonics Technology Letters, IEEE  (Volume:23 ,  Issue: 15 )