| Project/Area Number |
24560049
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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 |
Applied optics/Quantum optical engineering
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| Research Institution | Okayama Prefectural University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
SAKAGUCHI Koichiro 岡山県立大学, 情報工学部, 助教 (10551822)
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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 |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2014: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Keywords | photodiode / optical bistability / optical multistability / coupled quantum well / quantum effect / tunnel effect / quantum effect device |
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| Outline of Final Research Achievements |
For photodiodes with asymmetric coupled quantum well optical absorption layers, it was showed that an optical signal detection with a wavelength-selective function is realized in combination of a self-electro-optic effect and a tunnel effect. Furthermore, the wavelength-selective width is electrically controllable, and thus the optical detection for a single wavelength light is possible in principle.
By using a coupled-quantum-well optical multistable device or by stacking of optical bistable devices, we also showed that an irreversible optical bistable characteristic, i.e., an isolated optical state can be created.
The former function may be promising for wavelength multiplex communication systems, while the latter seems to be very interesting from the viewpoint of concealing data in optical information processing systems.
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