| Presentation | 2020-01-31 Analysis of a TE-pass/TM-stop waveguide polarizer in the THz region Sumire Takahashi, 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) | We propose a TE-pass/TM-stop waveguide polarizer with a semiconductor layer in the terahertz region. First, we investigate a two-dimensional (2-D) polarizer. The eigenmode analysis is carried out for the polarizer section with InSb or InAs being adopted for the semiconductor layer. In this analysis, we calculate the overlap integral between the input eigenmode and the two TM modes of the polarizer section, and the propagation loss of the latter two modes. From these results, we estimate an appropriate buffer thickness. Next, we consider the polarizer using InSb as a semiconductor layer. We investigate the frequency characteristics with respect to temperature changes using the finite-difference time-domain method. It is shown that an extinction ratio of more than 40 dB can be obtained at a designed frequency. However, it is revealed that the peak frequency of an extinction ratio becomes higher as the temperature is increased. Consideration is next given to the polarizer using InAs as a semiconductor layer. The polarizer is found to offer an extinction ratio of more than 20 dB over a frequency range of 1.3 to 1.65 THz from 280 to 320 K. Finally, we investigate a three-dimensional (3-D) polarizer using InAs as a semiconductor layer. It is shown that the comparable performance to the 2-D polarizer can be obtained for the 3-D one. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Waveguide polarizer / Extinction ratio / Surface plasmon polariton (SPP) / InSb / InAs / Terahertz (THz) wave / Finite-difference time-domain (FDTD) method |
| Paper # | EST2019-98 |
| Date of Issue | 2020-01-23 (EST) |
| Conference Information | |
| Committee | EST |
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| Conference Date | 2020/1/30(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Beppu International Convention Center |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Simulation Technique, etc. |
| Chair | Akimasa Hirata(Nagoya Inst. of Tech.) |
| Vice Chair | Shinichiro Ohnuki(Nihon Univ.) / Masayuki Kimishima(Advantest) / Jun Shibayama(Hosei Univ.) |
| Secretary | Shinichiro Ohnuki(National Inst. of Tech.,Sendai College) / Masayuki Kimishima(Aoyama Gakuin Univ.) / Jun Shibayama |
| Assistant | Takahiro Ito(Nagoya Inst. of Tech.) / Kazuhiro Fujita(Fujitsu) |
| 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) | Analysis of a TE-pass/TM-stop waveguide polarizer in the THz region |
| Sub Title (in English) | |
| Keyword(1) | Waveguide polarizer |
| Keyword(2) | Extinction ratio |
| Keyword(3) | Surface plasmon polariton (SPP) |
| Keyword(4) | InSb |
| Keyword(5) | InAs |
| Keyword(6) | Terahertz (THz) wave |
| Keyword(7) | Finite-difference time-domain (FDTD) method |
| 1st Author's Name | Sumire Takahashi |
| 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 | 2020-01-31 |
| Paper # | EST2019-98 |
| Volume (vol) | vol.119 |
| Number (no) | EST-407 |
| Page | pp.pp.97-102(EST), |
| #Pages | 6 |
| Date of Issue | 2020-01-23 (EST) |