Finite-difference time-domain and near-field-to-far-field transformation in the spectral domain: application to scattering objects with complex shapes in the vicinity of a semi-infinite dielectric medium

Aiming at the invisibility of the electromagnetic environment (EME), this paper presents the method to visualize the weapon equipments EME. The visualization can be divided into two steps. Firstly, we can model the weapon equipments EME to get the electromagnetic data by the finite difference time domain(FDTD) and the transformation from the near field to the far field. Secondly, we can render the electromagnetic data by the data field visualization. The experiment shows that this way is feasible and effective.

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Correction to “An RWG Basis Function Based Near-to Far-Field Transformation for 2-D Triangular-Grid Finite Difference Time Domain Method”

IEEE Transactions on Antennas and Propagation ◽

10.1109/tap.2006.883086 ◽

2006 ◽

Vol 54 (9) ◽

pp. 2694-2694

Author(s):

X.H. Wu ◽

A.A. Kishk ◽

A.W. Glisson

Keyword(s):

Finite Difference ◽

Time Domain ◽

Basis Function ◽

Finite Difference Time Domain ◽

Time Domain Method ◽

Triangular Grid ◽

Far Field ◽

Domain Method ◽

Field Transformation ◽

Difference Time

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Polarization-current-based, finite-difference time-domain, near-to-far-field transformation

Optics Letters ◽

10.1364/ol.34.001600 ◽

2009 ◽

Vol 34 (10) ◽

pp. 1600 ◽

Cited By ~ 2

Author(s):

Yong Zeng ◽

Jerome V. Moloney

Keyword(s):

Finite Difference ◽

Time Domain ◽

Finite Difference Time Domain ◽

Far Field ◽

Polarization Current ◽

Field Transformation ◽

Difference Time

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An RWG Basis Function Based Near- to Far-Field Transformation for 2-D Triangular-Grid Finite Difference Time Domain Method

IEEE Transactions on Antennas and Propagation ◽

10.1109/tap.2006.875932 ◽

2006 ◽

Vol 54 (6) ◽

pp. 1901-1905 ◽

Cited By ~ 2

Author(s):

X.H. Wu ◽

A.A. Kishk ◽

A.W. Glisson

Keyword(s):

Finite Difference ◽

Time Domain ◽

Basis Function ◽

Finite Difference Time Domain ◽

Time Domain Method ◽

Triangular Grid ◽

Far Field ◽

Domain Method ◽

Field Transformation ◽

Difference Time

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Three-Dimensional Finite-Difference Time-Domain Method Modeling of Nanowire Optical Probe

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.602-605.3359 ◽

2014 ◽

Vol 602-605 ◽

pp. 3359-3362

Author(s):

Chun Li Zhu ◽

Jing Li

Keyword(s):

Finite Difference ◽

Time Domain ◽

Finite Difference Time Domain ◽

Incident Light ◽

Near Field ◽

Three Dimensional ◽

Polarization Direction ◽

Near Field Imaging ◽

Difference Time ◽

Field Imaging

In this paper, output near fields of nanowires with different optical and structure configurations are calculated by using the three-dimensional finite-difference time-domain (3D FDTD) method. Then a nanowire with suitable near field distribution is chosen as the probe for scanning dielectric and metal nanogratings. Scanning results show that the resolution in near-field imaging of dielectric nanogratings can be as low as 80nm, and the imaging results are greatly influenced by the polarization direction of the incident light. Compared with dielectric nanogratings, metal nanogratings have significantly enhanced resolutions when the arrangement of gratings is perpendicular to the polarization direction of the incident light due to the enhancement effect of the localized surface plasmons (SPs). Results presented here could offer valuable references for practical applications in near-field imaging with nanowires as optical probes.

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