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研究生： 劉宜臻
Liu, Yi-Jhen
論文名稱： 設計非周期性准相位匹配光柵以達成非等間距之多波長轉換
Design of aperiodic quasi-phase matched grating for unequally-spaced multi-channel wavelength conversion
指導教授： 楊尚達
Yang, Shang-Da
口試委員:
學位類別： 碩士
Master
系所名稱： 電機資訊學院 - 光電工程研究所
Institute of Photonics Technologies
論文出版年： 2009
畢業學年度： 97
語文別： 中文
論文頁數： 74
中文關鍵詞： 准相位匹配
相關次數： 點閱：2  下載：0 
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    • 本篇論文利用基因演算法以求得Non-periodic optical superlattice(NOS)晶體極化反轉點所發生的位置，分別設計等高之相位匹配雙峰設計、等高且不等間距之相位匹配三峰設計、等高且等間距相位匹配四峰設計、V型且等間距相位匹配五峰設計、和等高等間距相位匹配八峰設計，並且探討製程誤差及溫度不均勻分布對匹配頻譜的影響、高轉換效率時匹配頻譜的改變，且和現有的幾種准相位匹配技術做比較。

    摘要 I Abstract II 致謝 III 目錄 IV 圖目錄 VI 表目錄 IX 第一章 緒論 1 1.1 簡介與動機 1 1.2 內容摘要 2 第二章 相位匹配理論及准相位匹配元件設計 3 2.1相位匹配理論 3 2.2准相位匹配元件設計 9 2.2.1 Phase reversal sequence (PRS) 9 2.2.2 Dammann grating 11 2.2.3 Aperiodic Optical Superlattice (AOS) 13 2.2.4 Nonperiodic optical superlattice (NOS) 14 2.3基因演算法 16 2.3.1 產生最初的族群(population) 16 2.3.2 編碼 17 2.3.3 選擇(selection) 18 2.3.4 交配(crossover) 20 2.3.5 突變(mutation) 22 2.3.6 將產生的子代放入新世代中(Reinsertion) 24 2.3.7 遷移(migration) 24 2.4 高轉換效率的影響 27 第三章 模擬結果 29 3.1 相位匹配多峰之設計 29 3.1.1 等高之相位匹配雙峰 29 3.1.2等高、不等間距之相位匹配三峰 32 3.1.3等高、等間距之相位匹配四峰 37 3.1.4 V形、等間距相位匹配五峰 41 3.1.5等高、等間距相位匹配八峰 45 3.2製程誤差及晶體溫度不均勻之影響 49 3.2.1製程誤差之影響 49 3.2.2 晶體溫度不均勻之影響 52 3.3高轉換效率之影響 58 3.4與現有設計方法之比較 65 3.4.1 Dammann grating 65 3.4.2 以模擬退火法設計aperiodic optical superalttice (AOS) 68 第四章 結論與展望 71 參考文獻 73

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