| Presentation | 2009-09-14 Finite Difference Time Domain (FDTD) Analysis in Three-Dimensional Scattering Medium : Boundary and Source Conditions Hideyuki KUMAZAWA, Kazuya OKIMATSU, Shogo TABATA, Naoya NISHIO, Tadatoshi TANIFUJI, |
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| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Source and boundary conditions in an FDTD analysis for optical pulse propagation in 3-D scattering medium are described. New boundary conditions are derived based on the integral form of diffusion equations by utilizing Gauss's Theorem. The boundary conditions are defined by both fluence rate and radiant flux and isotropic point sources are enabled to be incorporated even in the surface cells. Next, isotropic point source power assignments to the discrete Yee grids are proposed, in which the point source power is divided into the two adjacent Yee grid points inversely proportional to the distance between the source and the grid points. Backward scattered reemissions from semi-infinite homogeneous scattering medium of 0.02 and 2mm^<-1> in absorption and scattering coefficients were calculated based on the FDTD analysis and the numerical results were compared with analytical solutions. The both are in good agreement, which justify the FDTD formulation proposed here. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Boundary condition / Collimated source / FDTD analysis / Isotropic point source / Optical diffusion equation |
| Paper # | MBE2009-45 |
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| Committee | MBE |
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| Conference Date | 2009/9/7(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
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| Paper Information | |
| Registration To | ME and Bio Cybernetics (MBE) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Finite Difference Time Domain (FDTD) Analysis in Three-Dimensional Scattering Medium : Boundary and Source Conditions |
| Sub Title (in English) | |
| Keyword(1) | Boundary condition |
| Keyword(2) | Collimated source |
| Keyword(3) | FDTD analysis |
| Keyword(4) | Isotropic point source |
| Keyword(5) | Optical diffusion equation |
| 1st Author's Name | Hideyuki KUMAZAWA |
| 1st Author's Affiliation | Electrical and Electronics Engineering Department, Kitami Institute of Technology() |
| 2nd Author's Name | Kazuya OKIMATSU |
| 2nd Author's Affiliation | Electrical and Electronics Engineering Department, Kitami Institute of Technology |
| 3rd Author's Name | Shogo TABATA |
| 3rd Author's Affiliation | Electrical and Electronics Engineering Department, Kitami Institute of Technology |
| 4th Author's Name | Naoya NISHIO |
| 4th Author's Affiliation | Electrical and Electronics Engineering Department, Kitami Institute of Technology |
| 5th Author's Name | Tadatoshi TANIFUJI |
| 5th Author's Affiliation | Electrical and Electronics Engineering Department, Kitami Institute of Technology |
| Date | 2009-09-14 |
| Paper # | MBE2009-45 |
| Volume (vol) | vol.109 |
| Number (no) | 194 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |