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姓名 林少偉(Shao-Wei Lin)  查詢紙本館藏   畢業系所 光電科學與工程學系
論文名稱 非週期性晶格極化反轉鈮酸鋰作為主動式窄頻寬通多波長濾波器及倍頻多波長濾波器
(Active narrowband multiple Telecom-Band Fundamental and Second-Harmonic wavelength filter in aperiodically poled lithium niobate)
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摘要(中) 光學濾波器在光通訊中處理特定頻譜的訊號是不可或缺的;窄瀕濾波器更是特別重要;再者,多波長濾波器的主動元件在通訊系統中較被動元件更強大且多功能。
我們設計且做了第一個利用APLN當作在C band的主動式窄頻寬多波長濾波器。在5公分長的APLN元件,外加約700(V/mm)的電場(設設計值為298V/mm),能夠同時使得8個電信波長有大於90%以上的穿透率(設計上~100%),每個波長的頻寬約為0.45nm。我們在一片2cm的串極式APLN晶體,1cm長的波長濾波器接著1cm長的波長轉換器,得到了高度地抑制了邊葉波段的四個窄頻的二倍頻光。
摘要(英) Optical Filters are quite dispensibale in optical communication allows the process of signals in special spectrum portions. Narrowband filters are particularly important. Moreover, Active devices with multiple wavelength filter would be much powerful and functional in the communication system than the passive ones.
we report the design and first experimental observation of active narrowband multiple wavelength filters in aperiodically poled lithium niobates (APLN) crystals in telecom C band. Simultaneous transmission of >90% (~100% in design) of 8 telecom wavelengths with each a bandwidth of ~0.45 nm was achieved in a 5-cm long APLN device when an electro-optic field of ~700 V/mm (~298 V/mm in design) was applied. We also obtained four peak-narrowed and highly sidelobe-suppressed second-harmonic generation (SHG) signals of four telecom wavelengths from a monolithic LiNbO3 crystal cascading a 1-cm long APLN wavelength filter and a 1-cm long APLN wavelength converter.
關鍵字(中) ★ 鈮酸鋰
★ 倍頻
★ 窄頻
★ 主動式
★ 濾波器
★ 多波長
★ 極化反轉
★ 準相位匹配
關鍵字(英) ★ Lithium Niobate
★ LiNbO3
★ Quasi-Phase Matching
★ active
★ narrow band
★ telecom band
★ SHG
★ second-harmonic generation
★ poling
★ Multiple Wavelength
★ filter
論文目次 目 錄
摘要.....................................i
致謝...................... ..............iii
目錄.....................................iv
圖目.....................................vi
表目.....................................ix
第一章 緒論..............................1
1.1 光通訊之發展趨勢.....................1
1.2 研究動機.............................3
1.3 內容概要.............................5
第二章 理論背景..........................6
2.1 準相位匹配原理.......................6
2.2 週期性反轉之鈮酸鋰晶體的電光效應.....11
2.3 非週期性區塊光軸反轉之鈮酸鋰晶體.....18
第三章 元件之設計與製程..................21
3.1 元件設計.............................22
3.1.1 模擬退火法作最佳化.................22
3.1.2 電極之設計.........................24
v
3.2 元件製程.............................27
第四章 實驗量測及結果分析................34
4.1 實驗架構.............................34
4.2 實驗量測結果.........................37
4.2.1 Cascade APLN 實驗量測結果..........37
4.2.2 五公分之APLN 實驗量測結果..........45
4.3 製程誤差模擬.........................48
4.3.1 區塊合併模擬.......................48
4.3.2 過反轉模擬.........................51
4.3.3 隨機誤差模擬.......................53
4.3.4 串極式EO-PPLN 模擬.................55
4.4 Duty Cycle 對效率的影響..............57
第五章 結論與未來展望....................60
5.1 結論.................................60
5.2 未來展望.............................61
參考文獻.................................64
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指導教授 陳彥宏(Yen-Hung Chen) 審核日期 2007-1-18
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