| Project/Area Number |
25420342
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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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| Research Field |
Electron device/Electronic equipment
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| Research Institution | Tokyo University of Science |
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Principal Investigator |
Maeda Joji 東京理科大学, 理工学部, 教授 (10256670)
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| Co-Investigator(Renkei-kenkyūsha) |
FUKUCHI Yutaka 東京理科大学, 工学部, 准教授 (70366433)
EBISAWA Satoshi 新潟工科大学, 工学部, 助教 (50386596)
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| Project Period (FY) |
2013-04-01 – 2016-03-31
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| Project Status |
Completed (Fiscal Year 2015)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
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| Keywords | 光アクセスシステム / 半導体光増幅器 / 波長多重 / 下流再変調 / WDM-PON / アクセスシステム / 光ファイバ通信 / PON |
|---|
| Outline of Final Research Achievements |
Color-less optical network units that operate at an arbitrary wavelength are anticipated in WDM-PON systems. Downstream re-modulation schemes using gain saturation of semiconductor optical amplifiers (SOAs) have been demonstrated so far, though available bit rates are limited below several gigabits per second due to slow carrier life time of SOAs. The researcher studied an SOA-based downstream re-modulation scheme available for beyond-10 gigabits per second systems assisted by a Fabry-Perot ethalon that cuts off high frequency components of modulation sidebands. Experiments of bi-directional transmission were successfully demonstrated. The researcher also proposed a scheme of automatic tuning of the ethalon, and experimentally demonstrated its basic operation.
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