博碩士論文 91236006 詳細資訊




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姓名 謝炳順(Bing-shun Shieh)  查詢紙本館藏   畢業系所 光電科學研究所碩士在職專班
論文名稱 動態波長分配技術在乙太被動光纖網路的應用
(Dynamic Wavelength Allocation Scheme for Applications of Ethernet Passive Optical Networks)
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摘要(中) 本論文提出一新穎的動態波長分配(DWA)機制,架構在乙太被動光纖網路系統,用以解決網路流量突增的問題,維持網路流量的穩定性。
乙太被動光纖網路近來被認為是接取網路最具有應用前景的技術,採用點對多點拓樸架構, 動態波長分配提供頻寬分享且可跨越多重的被動光纖網路架構;由調變雷射、陣列波導、粗/細過濾器構成有彈性的光存取方式,可當TDM PON 與WDM PON的橋樑,此架構將廣泛為下一代光纖網路所採用。
本文架構由單模雷射、可調變波長雷射、陣列波導光柵、緩衝器等組成,經MATLAB模擬軟體計算出機率模型分佈,同時由模擬結果決定最佳的切換機制,此系統以模擬架設並實際經過校園網路實際測量,當網路負載增加到一定程度時,經由DWA機制的實施,所量測的網路反應時間或者是網路流量結果證實,本系統確實能夠達到疏解負載增加的問題,進而發揮機動性的網路流量支援設備功能,達到最經濟、最簡單的區域性網路架構。
摘要(英) This work proposes the dynamic wavelength allocation mechanism to solve the problem of sudden traffic loading for the Ethernet passive optical networks(PON).
Ethernet PON has recently been considered as the most prospective application technology in access network. It is adopted the point-to-multi-point(P2MP) topology construction,Which can greatly reduce the amount of optical fiber and the disbursement.
Moreover the DWA mechanism provides the bandwidth sharing across multiple physical PONs. A flexible new optical access solution is reached by combing the tunable lasers, the arrayed waveguide gratings, and the coarse/fine filters. The excellent stability of the network can bridge the gap between conventional TDM PONs and WDM PONs, and the powerful architecture is a promising candidate of the optical access networks for the next generation.
This structure is composed of the single mode laser, the tunable laser, the array waveguide, and the buffer storage device. The probability model distribution is calculated by the MATLAB, and the mechanism of optimal separation is determined by the computer simulation. This system is tested through the measured reaction time or the flow capacity of network on campus network when the traffic load increases up to a loading level. It is shown that the DWA system, can effectively solve the problems when the load increases, Which is the most economical and simplest local network infrastructure for the PONs.
關鍵字(中) ★ 動態波長分配
★ 以太被動光纖網路
★ 可調變雷射
★ 點對多點拓樸架構,波長分配多工被動光纖網路
★ 陣列波導光柵
關鍵字(英) ★ TDM PON
★ WDM PON
★ EPON
★ DWA
★ P2MP
論文目次 中文摘要 .…………………………………………………………….…i
英文摘要 ..…………………………………………………………….. ii
目錄 ………………………………………………………………….…iv
圖表目錄 ………………………………………………………………. v
第一章 緒 論 ……..……………………………………………….….1
1-1 前 言 ……………………………………………………...1
1-2 研究動機與目的 …………………………………………..4
1-3 論文架構……………………………………………………4
第二章 被動式光纖網路…….……………………………......................5
2-1 被動式光纖網路(PON)發展現況…………….………….....5
2-2 PON技術發展之多元化….………………………………10
2-3 被動式光纖網路的未來遠景 ……………...…………….13
第三章 DWA PON系統設計 ………………………………………....14
3-1 DWA系統架構…………………………………………....14
3-2 DWA系統原理……………………………………………17
3-3 網路流量模型分析及模擬..………………………………23
第四章 量測結果與討論 ……………………………….……………..26
4-1 學術網路量測……. ……………………………………...26
4-2 學術網路流量取樣工具與實測結果……. ………….…...31
4-3 網路流量模擬與實測結果分析…..………………….…...33
4-4 相關文獻比較……………………..………………….…...43
第五章 結論與未來研究方向...………………………………….…….46
參考文獻....…………………..………………………………………….48
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指導教授 陳啟昌、林炆標
(Chii-Chang Chen、Wen-Piao Lin)
審核日期 2008-1-15
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