Development of high-gain, polarization-insensitive closely-stacked quantum dot optical amplifiers
| Project/Area Number |
24360121
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Electronic materials/Electric materials
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| Research Institution | Kobe University |
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Principal Investigator |
KITA Takashi 神戸大学, 工学(系)研究科(研究院), 教授 (10221186)
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| Co-Investigator(Kenkyū-buntansha) |
HARADA Yukihiro 神戸大学, 大学院工学研究科, 助教 (10554355)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2013: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2012: ¥9,620,000 (Direct Cost: ¥7,400,000、Indirect Cost: ¥2,220,000)
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| Keywords | 量子ドット / 光アンプ / 光利得 / 偏波無依存 / 光通信 / Siドーピング |
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| Outline of Final Research Achievements |
We performed modal analysis for 40-stacked InAs/GaAs quantum dot semiconductor optical amplifiers (QDSOAs) as a function of the waveguide width using an equivalent refractive index technique. QDSOAs with 5- and 11-micro-m-waveguide widths show multi-mode operations. The theoretical simulation reproduced well the experimental electroluminescence spectrum and unveiled that the output signals comprise several transverse modes. Besides, we confirmed a waveguide width less than 1.28 micro-m is essential to realize single-mode QDSOAs. The modal gain spectra were analyzed by using the Hakki-Paoli method. Multi peaks arisen from the multi-mode operation were also observed in the gain spectrum, suggesting precise control of the transverse mode is important for a practical realization of the single-mode device.
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Report
(4 results)
Research Products
(65 results)
