| Project/Area Number |
26630142
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Tohoku University |
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Principal Investigator |
MATSUURA YUJI 東北大学, 医工学研究科, 教授 (10241530)
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| Co-Investigator(Kenkyū-buntansha) |
KATAGIRI TAKASHI 東北大学, 大学院工学研究科, 准教授 (90415125)
KINO SAIKO 東北大学, 大学院医工学研究科, 教育研究支援者 (30536082)
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| Project Period (FY) |
2014-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2015: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | テラヘルツ導波路 / 方向性結合器 / 中空光ファイバ / 中空導波路 / テラヘルツ波 |
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| Outline of Final Research Achievements |
This research aims to develop optical devices for terahertz wave based on hollow waveguides. A directional coupler utilizing coupling between tube-leaky waveguides is proposed and it is investigated by using a beam propagation method. As a result, it is found that the coupling length highly depends on the inner diameter of the waveguide and for diameter of 1 mm, a 9-cm long, 50%-division coupler for 200 um wavelength is designed. Then a hollow-waveguide coupler are fabricated by inserting a 80-um thick polyethylene film between two brass strips of 27-cm long having a 3-mm width square slot. The results of measurement of the power shift between waveguides using terahertz time-domain spectroscopy show that 50% power division is obtained at 250 um
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