光學積體電路波導繞線之訊號損耗最佳化

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姓名

葉建仁(Jian-Ren Ye) 查詢紙本館藏

畢業系所

電機工程學系

論文名稱

光學積體電路波導繞線之訊號損耗最佳化
(Waveguide Routing for Integrated Optics with Signal-Loss Optimization)

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摘要(中)

隨著超大型積體電路的發展，訊號傳遞的速度已經成為電子系統效能的主要瓶頸，然而近年來因為矽基積體光學(Silicon-Based Integrated Optics)的突破，目前已有相當成熟的光學元件製程以及整合電子與光學系統的技術，若在關鍵的通訊模組採用光學元件，訊號就能以更有效率的方式傳遞，因此，矽基光電系統整合(Optoelectronic System Integration in Silicon)漸漸受矚目。
積體光學的其中一個重要議題為波導(Waveguide)繞線，波導的交錯(Crossing)與彎曲(Bend)的位置，會造成繞射或干涉的現象，使得訊號品質下降，由於光學訊號沒有像電子訊號一般的修復能力，在做波導繞線時應盡量避免可能造成訊號損失的狀況，現今已有相關的文獻，以傳統的演算法為基礎，在保證交錯的數量為最小的前提減少轉彎的數量，然而，在轉彎數量上似乎仍有改進的空間。因此本論文提出了一個以圖形為基礎的演算法來表示轉彎的真實情況，並藉由分組的技術使轉彎數大幅度減少。實驗結果顯示我們提出的方法能有效率降低訊號的損失。

摘要(英)

With the advance of Very-Large-Scale Integration (VLSI) circuits, signal propagation delay has become the major bottleneck that limits circuits. Recently, due to the breakthroughs in silicon-based integrated optics, mature optical device process is available now for the integration optics between electronic and optics. If optical devices are used in critical communication module, signals can be propagated in a more efficient way. Therefore, Optoelectronic System Integration in Silicon (OPSIS) has become a popular research direction.
One of the key issues in integrated optics is waveguide routing. Waveguide crossings and bends will incur diffraction and refraction and degrade the signal quality. Unlike electrical signals, optical signals lack the signal restoration capability. Those possible signal losses should be avoided in waveguide routing. There are some previous works that can guarantee the minimal number of crossings and reduce the number of bends based on traditional routing algorithms. However, the number of bends in previous works is still possible to be reduced. Therefore, this thesis proposes a graph-based algorithm to model the waveguide bends and reduce the number of bends by a grouping technique in the graph. The experimental results have demonstrated the efficiency of our methodology on decreasing the signal loss in waveguides.

關鍵字(中)

★ 訊號損耗

關鍵字(英)

論文目次

摘要 I
Abstract II
致謝 III
目錄 IV
圖目錄 VII
表目錄 IX
第一章、緒論 1
1-1 光學繞線架構 1
1-2 訊號損耗 3
1-3 論文結構 3
第二章、相關研究 4
2-1 通道繞線 4
2-2 以排序為基礎的演算法 5
2-2-1 傳統排序演算法 5
2-2-2 兩側交換排序演算法 6
2-2-3 限制兩側交換演算法 9
2-3 左緣通道繞線 10
2-3-1 交錯限制通道分配 10
2-3-2 敲膝蓋(knock knee)通道分享 11
2-3-3 藉由交錯限制減少循環 12
2-4 研究動機 13
2-4-1 本篇的特色 15
2-4-2 問題定義 15
第三章、演算法 16
3-1 轉彎形態 17
3-1-1 必需轉彎 17
3-1-2 繞路轉彎 18
3-2 建立衝突對應圖 19
3-2-1 同向衝突 19
3-2-2 反向阻擋 21
3-3 群集衝突對應圖 22
3-3-1 群集範例 22
3-3-2 優先權 23
3-4 投影繞線結果 24
3-4-1 投影範例 24
3-4-2 投影步驟 25
3-4-3 無繞路轉彎的繞線 25
3-4-4 有繞路轉彎的繞線 26
3-4-5 投影繞線的複雜度 27
3-5 通道改善 28
3-5-1 通道暴增原因與解決方法 28
3-5-2 通道改善的演算法 30
第四章、實驗結果及分析 31
4-1 轉彎模型 31
4-2 最小交錯數量 31
4-3 實驗數據 32
第五章、結論與未來展望 34
參考文獻 35

參考文獻

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[6] Yurii Vlasov and Sharee McNab, “Losses in single-mode silicon-oninsulator strip waveguides and bends,” Optical Society of American., vol. 12, no. 8,pp. 1622–1631, Apr. 2004.
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[8] Guoliang Li, Jin Yao, Hiren Thacker, Attila Mekis, Xuezhe Zheng, Ivan Shubin, Ying Luo, Jin-hyoung Lee, Kannan Raj, John E. Cunningham, and Ashok V. Krishnamoorthy, “Ultralow-loss, high-density SOI optical waveguide routing for macrochip interconnects,” Optical Society of American., vol. 20, no. 11, pp. 12035–12039, May 2012.
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[11] Akihiro Hashimoto, and James G. Stevens, “Wire routing by optimizing channel assignment within large apertures,” in Proc. 8th DAC, New York, NY, USA, 1971, pp. 155–169.
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指導教授

劉建男、陳泰蓁(Chien-Nan Liu Tai-Chen Chen)

審核日期

2016-1-28

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