Study on high performance and large port count waveguide-based optical switches
| Project/Area Number |
18K04286
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Review Section |
Basic Section 21060:Electron device and electronic equipment-related
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| Research Institution | Kagoshima University |
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Principal Investigator |
Watanabe Toshio 鹿児島大学, 理工学域工学系, 准教授 (90524124)
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| Project Period (FY) |
2018-04-01 – 2021-03-31
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| Project Status |
Completed (Fiscal Year 2020)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2020: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
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| Keywords | 光スイッチ / 光導波路 / 光回路 / 位相アレイ |
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| Outline of Final Research Achievements |
We examined circuit designs of waveguide-based optical switches used in optical fiber communication systems. In a 1xN phased-array optical switch, we employ window functions other than conventional Gaussian for optical power ratio between arrayed-waveguides, which gives an extinction ratio as high as 50 dB in simulation. In a nested interferometer optical switch, we show its circuit configuration to expand operational wavelength range and increase output port counts. These results show that we successfully establish the optical circuit design of large port count optical switches.
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| Academic Significance and Societal Importance of the Research Achievements |
光ファイバー通信システムにおいて、光信号を電気信号に変換することなく、その経路を切り替えるために光スイッチが用いられる。本研究では、光スイッチの中でも、小型集積化が可能で、量産性に優れるという特長をもつ導波路型光スイッチについて、新規な光回路の構成を示した。回路の設定をわずかに変えることで、光スイッチの性能が大きく向上することがわかった。こうした高性能で大規模な光スイッチは、光ファイバー通信ネットワークやデータセンター内ネットワークにおいて有用である。
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Report
(4 results)
Research Products
(6 results)
