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研究生:湯富福
研究生(外文):Fu-Fu Tang
論文名稱:Y-型光功率分配器之設計與模擬
論文名稱(外文):Design and Simulation of the Y-Branch Optical Power Splitter
指導教授:林堅楊林堅楊引用關係
指導教授(外文):Jian-Yang Lin
學位類別:碩士
校院名稱:國立雲林科技大學
系所名稱:電子與資訊工程研究所碩士班
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:2004
畢業學年度:92
語文別:中文
論文頁數:137
中文關鍵詞:光束傳播法Y型分枝光波導光功率分配器
外文關鍵詞:optical power splitterwaveguideBPMY-branch
相關次數:
  • 被引用被引用:2
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  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
本篇論文主要是利用Y型分枝結構為基礎,搭配彎角(angled)、錐形(Taper)和S型彎曲結構(S-bend)來設計一低insertion loss和高均勻度的光功率分配器。為了知道所設計之結構是否可行,我們所模擬出之結果必須合乎Bellcore GR-1209-core 的規範,也就是說1對2光功率分配器的insertion 損耗必須低於4.0 dB,且均勻度必須低於0.7dB。在本研究中,結構上我們除了討論波導寬度W、折射率差異△n、g值與d值外,我們亦探討了分枝角度θ所造成的影響。並且對於TE與TM兩個不同的偏振模態也加以探討。大致上所設計的結構都能符合Bellcore GR-1209-core 的規範,損耗最佳的結構參數為波導寬度W=6μm、Δn = 0.2%、g = 1μm、d = 1μm及分枝角度θ為1.8度的結構,其損失為3.1967dB;至於在d = 3μm時,在Δn = 0.2%,分枝角度等於1.85度時有最低損失(3.4202dB),就均勻度而言所設計之結構皆可達到接近於0dB。
In this study, the optical power splitters of Y-branch waveguide type and angled、taper and S-bend were designated to have low insertion loss and good uniformities. In order to get an excellent structure, the design considerations were based on the Bellcore GR- 1209- core generic requirements for the fiber branching components. The optical fields at the output of the branches exhibit insertion loss must lower than 4.0 dB for the 1 × 2 optical power splitter. And the uniformities must lower than 0.7 dB for the 1 × 2 optical power splitter. In this work, we will discuss the influence of waveguide width ( W ), reflective index difference (Δn), coupling gap (g), and the separation between the leading edges of the Y-branch (d). On the other hand, the effects of TE and Tm polarization will be examined. The structures we designed are conforming to the Bellcore GR- 1209- core generic requirements for the fiber branching components. For the structure, W is 6μm, Δn is 0.2%, g is 1μm, d is 1μm and the θ is 1.8 degree had the lowest insertion loss was 3.1967 dB, and in the structure, d is 3μm, Δn is 0.2%, θ is 1.85 degree had the lowest insertion loss was 3.4202dB. And the best uniformity could be closed to 0 dB at the above optical power splitter.
目 錄
摘 要 i
ABSTRACT ii
誌 謝 iv
目 錄 v
圖 目 錄 vii
一、緒 論 1
二、波導理論分析 3
2.1 光波導結構與種類 3
2.2 波導傳輸條件 3
2.3 波導傳輸模態 5
2.4 對稱平版波導的傳輸模態 7
2.5 平面與通道式波導的傳播模態 8
三、光束傳播法(BPM) 10
3.1 光束傳播法簡介及其特色 10
3.2 光束傳播法及其原理 10
3.3 有限差分光速傳播法 11
3.4 邊界吸收條件 13
3.5 利用Pade’近似法的大角度光傳播 15
四、光功率分配器設計考量 16
4.1 低損耗彎曲波導 16
4.2 錐形結構與Y型分枝結構 17
4.3 光功率分配器結構 19
4.4 光功率分配器模擬參數 20
4.4.1 單模參數設定 20
4.5 模擬及求值之方法 21
五、結果與討論 22
5.1 單模光功率分配器 22
5.2 光功率分配器之結構探討 22
5.2.1 不同分枝角度之影響 22
5.2.2 不同波導寬度之影響 23
5.2.3 不同折射率差異之影響 24
5.2.4 d值與g值的影響 25
5.3 製程規劃 25
六、結論 28
參 考 文 獻 29
附錄一………………………………………………………………………………….80
作者簡歷…………………………………………………………………………… 124
參 考 文 獻


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