Research on all-optical signal processing technology for flexible symbol-rate optical OFDM communication
Project/Area Number |
16H04369
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Research Category |
Grant-in-Aid for Scientific Research (B)
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Allocation Type | Single-year Grants |
Section | 一般 |
Research Field |
Communication/Network engineering
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Research Institution | Ritsumeikan University |
Principal Investigator |
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Project Period (FY) |
2016-04-01 – 2019-03-31
|
Project Status |
Completed (Fiscal Year 2018)
|
Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2018: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2017: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Fiscal Year 2016: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000)
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Keywords | 光信号処理 / 集積光回路 / 光通信方式 / 光デバイス・光回路 / 光OFDM / 通信方式(無線、有線、衛星、光、移動) / 光通信 |
Outline of Final Research Achievements |
We proposed and researched characteristics of two demultiplexers for variable optical orthogonal frequency division multiplexing (OFDM) signals, which were both based on an optical star coupler-type Fourier transform circuit. The demultiplexer included an array of optical switches or an array of optical tunable couplers. We mainly investigated the tunable coupler-type optical OFDM demultiplexer, which showed better characteristics than the switch-type OFDM demultiplexer in terms of low loss variation in the tunable mode and so on. The tunable coupler-type OFDM demultiplexer could demultiplex variable optical OFDM signals ranging from 20 to 100 Gbit/s. In addition, we also investigated an add/drop multiplexer for variable optical OFDM signals, and realized a tunable optical OFDM demultiplexer based on the time lens method.
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Academic Significance and Societal Importance of the Research Achievements |
次世代の適応型光ネットワークは、チャネル間ガードバンドを削減し、通信トラヒック、伝送距離の変動に応じてチャネル数、チャネル毎のシンボルレート、変調フォーマットを柔軟に変化させることによって、必要最小限の帯域を使用し、ネットワーク資源の節約を図る(ハードウェアの稼働数減少、必要仕様の緩和を実現することで、消費電力、コストを抑制)。光OFDMは、複数のサブキャリアチャネル信号を信号シンボルレート間隔で高密度に周波数分割多重するため、適応型光ネットワークのガードバンド削減に適する。 本研究では、将来の適応型光ネットワークの実現に資する可変光OFDM信号分離回路を初めて実現した。
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Report
(4 results)
Research Products
(40 results)