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研究生:張軒瑜
研究生(外文):Syuan-Yu Jhang
論文名稱:兆赫波光子晶體光纖耦合器分析
論文名稱(外文):Analysis of Terahertz photonic crystal fiber coupler
指導教授:蔣榮生
指導教授(外文):Jung-Sheng Chiang
學位類別:碩士
校院名稱:義守大學
系所名稱:電機工程學系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2016
畢業學年度:104
語文別:中文
論文頁數:72
中文關鍵詞:光子晶體光纖向量邊界元素法耦合長度兆赫波
外文關鍵詞:Photonic crystal fiberVector boundary element methodCoupling lengthTHz
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本論文的研究主要針對光子晶體光纖耦合器在兆赫波波段下的之耦合模態特性,使用向量邊界元素法(VBEM)進行模擬分析,耦合器的設計為2×2與1×4,並且從耦合關係的推導成功地分析出位於輸出端的兩種模態,分別有偶模態與奇模態,進而去探討其耦合特性,成功地分析出2×2耦合器,波長在0.75mm、d/Λ=0.6時,兩個輸出端都有約50% (3dB)的耦合能量;而最佳的耦合長度為6.3mm,還有成功地算出當1×4耦合器在波長0.5mm時,四個輸出端有約25% (6dB)的耦合能量;最短的耦合長度為13.6mm,並且推算出正規化能量計算,由結果的可得知,使用向量邊界元素法可成功模擬在兆赫波波段下傳輸的光子晶體光纖耦合器。

In this paper, we study the photonic crystal fiber coupler coupled modal characteristics under terahertz wave band by using the Vector Boundary Element Method (VBEM). The design of coupler have 2×2 and 1×4, from the coupling relationship, we successfully derive to the two modes, respectively the even mode and odd modes on the output side. successfully analyze the 2×2 couplers at the wavelength is 0.75mm , the d/V is 0.6, the two output side respectively have 50% (3dB) coupling energy and the optimum coupling length is 6.3mm. we also successfully analyze the 1×4 couplers at the wavelength is 0.5mm, the four output side respectively have 25% (6dB) coupling energy and the shortest coupling length is 13.6mm. In the result, we can simulate the propagation in terahertz of photonic crystal fiber couplers.

致謝 III
摘要 IV
ABSTRACT V
目錄 VI
圖目錄 VIII
表目錄 X
第一章 緒論 1
1.1 前言 1
1.2 研究動機 4
1.3 研究方法 5
1.4 論文架構概述 5
第二章 數值方法 9
2.1 向量邊界元素法 9
2.2 邊界條件 13
2.3 數值程序 14
第三章 模擬結果與分析 19
3.1 程式驗證 19
3.2 2×2光子晶體光纖耦合器模型 22
3.3 耦合關係推導 23
3.4 2×2耦合模態場型 25
3.5 空氣孔洞半徑與頻率改變情形 32
3.6 2×2耦合長度 35
3.7 2×2能量計算 37
第四章 1×4耦合器模擬結果與分析 39
4.1 1×4光子晶體光纖耦合器模型 39
4.2 1×4光子晶體光纖耦合關係推導 40
4.3 1×4光子晶體光纖耦合模態場型 43
4.4 1×4耦合長度 53
4.5 耦合係數 54
4.6 能量計算 54
第五章 結論 56
參考文獻 58

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