2013 Fiscal Year Final Research Report
Wavelength-path optical networks based on digital coherent receivers
| Project/Area Number |
24656223
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Electron device/Electronic equipment
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| Research Institution | The University of Tokyo |
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Principal Investigator |
KIKUCHI Kazuro 東京大学, 工学(系)研究科(研究院), 教授 (50134458)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Keywords | 光ネットワーク / コヒーレント光通信 |
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| Research Abstract |
When spectra of wavelength-division multiplexed (WDM) channels are shaped by Nyquist filters, we can set the channel spacing equal to zero and maximize the transmission capacity. Such a WDM transmission technology is called "the Nyquist WDM technology". In this project, aiming at efficient demultiplexing of Nyquist WDM channels, we have proposed the digital signal-processing algorithm used in digital coherent receivers. After we receive the total spectrum of a desired channel including crosstalk from the adjacent channel, we can demultiplex the two WDM channels optimally with the proposed adaptive digital-filtering algorithm. The effectiveness of the proposed method has been confirmed with intensive computer simulations as well as experiments.
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Research Products
(7 results)
