| Presentation | 2021-01-22 Efficient analysis of a TM-pass terahertz waveguide polarizer using implicit and semi-implicit FDTD methods Shoko Gomi, Jun Shibayama, Junji Yamauchi, Hisamatsu Nakano, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | A TM-pass terahertz waveguide polarizer is efficiently analyzed using implicit and semi-implicit finite- difference time-domain (FDTD) methods. First, we analyze the waveguide polarizer using the FDTD method based on the implicit locally one-dimensional (LOD) scheme. We compare the computation time and accuracy with those of the explicit FDTD method. It is found that the computation time is reduced to $simeq$10% of the explicit FDTD method with a maximum error of 10% for the guided-mode power, when the time step size is chosen to be 55 times as large as the explicit counterpart. Furthermore, the waveguide polarizer is analyzed using the semi-implicit FDTD method. In this study, we introduce the implicit scheme only to the discretization of the thickness direction of the polarizer, which requires a small spatial mesh. It is shown that using a spatial mesh size with an aspect ratio of 1:16, the calculation time is reduced to 36% of the explicit FDTD method with a maximum error of 0.81%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Finite-difference time-domain (FDTD) method / Locally one-dimensional (LOD) / Semi-implicit FDTD method / Waveguide polarizer / Terahertz (THz) wave / Indium antimonide (InAs) |
| Paper # | EST2020-77 |
| Date of Issue | 2021-01-14 (EST) |
| Conference Information | |
| Committee | EST |
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| Conference Date | 2021/1/21(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Online |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shinichiro Ohnuki(Nihon Univ.) |
| Vice Chair | Masayuki Kimishima(Advantest) / Jun Shibayama(Hosei Univ.) / Yasuhide Tsuji(Muroran Inst. of Tech.) |
| Secretary | Masayuki Kimishima(Aoyama Gakuin Univ.) / Jun Shibayama(ENRI) / Yasuhide Tsuji |
| Assistant | Hidenori Ishibashi(MitsubishiElectric) / Seiya Kishimoto(Nihon Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Electronics Simulation Technology |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Efficient analysis of a TM-pass terahertz waveguide polarizer using implicit and semi-implicit FDTD methods |
| Sub Title (in English) | |
| Keyword(1) | Finite-difference time-domain (FDTD) method |
| Keyword(2) | Locally one-dimensional (LOD) |
| Keyword(3) | Semi-implicit FDTD method |
| Keyword(4) | Waveguide polarizer |
| Keyword(5) | Terahertz (THz) wave |
| Keyword(6) | Indium antimonide (InAs) |
| 1st Author's Name | Shoko Gomi |
| 1st Author's Affiliation | Hosei University(Hosei Univ.) |
| 2nd Author's Name | Jun Shibayama |
| 2nd Author's Affiliation | Hosei University(Hosei Univ.) |
| 3rd Author's Name | Junji Yamauchi |
| 3rd Author's Affiliation | Hosei University(Hosei Univ.) |
| 4th Author's Name | Hisamatsu Nakano |
| 4th Author's Affiliation | Hosei University(Hosei Univ.) |
| Date | 2021-01-22 |
| Paper # | EST2020-77 |
| Volume (vol) | vol.120 |
| Number (no) | EST-328 |
| Page | pp.pp.124-128(EST), |
| #Pages | 5 |
| Date of Issue | 2021-01-14 (EST) |