2013 Fiscal Year Final Research Report
Study on optical integrated circuits using quantum dot optical triode
| Project/Area Number |
21560048
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Applied optics/Quantum optical engineering
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| Research Institution | Kinki University |
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Principal Investigator |
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| Project Period (FY) |
2009-04-01 – 2014-03-31
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| Keywords | 光トライオード / 半導体光増幅器 / 相互利得変調 / 負帰還光増幅効果 / マルチキャスティング |
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| Research Abstract |
We demonstrated noise suppression characteristics of negative feedback optical amplifier using an optical triode. Optical triode was constituted by two semiconductor optical amplifiers. Noise suppression characteristic was evaluated by investigating the relationship of negative feedback light intensity with bit error rate. The BER curves obtained from measurement results showed reduction in BER as negative feedback light intensity increases. Further analysis revealed that although the signal gain decreases by 2.4 dB, power penalty was improved remarkably by 15 dB. This will result an output signal whose gain, waveform, and baseline, which stabilized automatically. Because of these experimental findings, it was shown possible to reduce optical amplification noise to a low level using optical triode. We also demonstrated an all-optical wavelength conversion and multicasting characteristics based on an all- optical triode using two negative feedback semiconductor optical amplifiers.
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