| Project/Area Number |
17300010
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Computer system/Network
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| Research Institution | Tohoku University |
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Principal Investigator |
HORIGUCHI Susumu Tohoku University, Tohoku University, Graduate School of Information Sciences, Professor (60143012)
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| Co-Investigator(Kenkyū-buntansha) |
KOBAYASHI Hiroaki Information Synergy Center, 情報シナジーセンター, Professor (40205480)
JIANG Xiaohong Graduate School of Information Sciences, 大学院・情報科学研究科, Associate Professor (00345654)
FUKUSHI Masaru Graduate School of Information Sciences, 大学院・情報科学研究科, Assistant Professor (50345659)
YAMAMORI Kunihito Miyazaki, University, Faculty of Engineering, Associate Professor (50293395)
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| Project Period (FY) |
2005 – 2007
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| Project Status |
Completed (Fiscal Year 2007)
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| Budget Amount *help |
¥15,420,000 (Direct Cost: ¥14,100,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2007: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2006: ¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 2005: ¥5,000,000 (Direct Cost: ¥5,000,000)
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| Keywords | Photonic Networks / Photonic Switches / Multi-stage Network Switches / Load Blancing / Switch Analytical Model / Active Restoration Strategy / 光クロスコネクト・スイッチ / 再帰構造型多段結合型スイッチ / セルフルーティング / スイッチ分散制御 / 3次元構造化 |
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| Research Abstract |
Optical Networks have been expecting for promising high-speed network for applications require a high data transmission rate, low error rate and low delay. In this research, we proposed new optical network architecture for high-speed photonic network which is implemented by all photonic devise. First, we invented the recursive network architecture for non-blocking optical switches and showed that the recursive switch architecture had the good network performance as well as the simple control strategy of self-routing.
We also invented the multi-stage optical switch architecture which has good properties of non-block and crosstalk free. The multi-stage optical switch architecture is a good choice for constructing non-blocking optical switch networks with low signal loss and crosstalk.
Banyan networks with optical switches that are very attractive for serving as the optical switch architectures due to their nice properties of small depth and absolutely signal loss uniformity. We investigated the stacked vertically stacked optical banyan which is combining the horizontal expansion and vertical stacking of optical banyan networks. We have showed that the horizontally expanded and vertically stacked optical banyan networks usually have good properties of non-block and crosstalk free. Also, we study on the blocking behavior analysis and show that the proposed method is an effective approach to studying network performance and finding a graceful compromise among hardware cost, network depth, and blocking probability.
Finally, we study the high survival network systems using a new restoration strategy which achieves the higher restoration performance than proactive restoration. We invented the active restoration strategy to compensate the switch node faults and link faults and achieve the high-survival performance for a large scale networks.
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