臺灣博碩士論文加值系統

本篇論文是研究一個新型Raman/EDFA混合式放大器，此放大器是將拉曼光纖放大器(Raman Fiber Amplifier；RFA)的拉曼激發散射(Stimulated Raman Sc- attering；SRS)非線性特性所產生的拉曼泵激餘量殘光(Residual Raman pump)回收後再導入摻鉺光纖(Erbium Doped Fiber；EDF)，做為摻鉺光纖放大器(Erbium-Doped Fiber Amplifiers；EDFA)的泵激光源，藉此來提升輸出功率及效能，此放大器架構是以拉曼光纖放大器串接一段摻鉺光纖，色散補償光纖(Dispersion Compensating Fiber；DCF)應用在拉曼光纖放大器，由於色散補償光纖不僅能補償色散，更能被當做拉曼光纖放大器中的增益介質；使整個輸出增益提升18dB和頻寬達到50nm比一般傳統單一拉曼光纖放大器效能表現更好。
本論文研究混合式放大器，可提供在DWDM傳輸上的應用，以及對於各類型放大器之研究做為參考依據。

In the thesis, A novel type hybrid amplifier of the Raman/EDFA was investigated. In order to improve the efficiency of power conversion. The Erbium Doped Fiber(EDF) was implanted into the Residual Raman pump in this hybrid amplifier which was resulted from the Stimulated Raman Scattering (SRS) of Raman Fiber Amplifier (FRA) to be the pump of the Erbium-Doped Fiber Amplifier (EDFA). EDF was cascaded by the FRA to form this amplifier. The Dispersion Compensating Fiber (DCF) was applied in the RFA because the DCF can not only make up the dispersion of compensating, but also can be regarded as an ideal gain medium of Raman. Compared with the performance of the Raman-only amplifier. The performance this novel hybrid amplifier is better in signal gain and effective gain-bandwidth by 18dB and 50nm, respectively.
The study of hybrid amplifier can find application in DWDM transmission and can be used as the reference to all kind of amplifier

中文摘要 i
英文摘要 ii
誌謝 iii
目錄 iv
圖目錄 vi
表目錄 viii
第一章 緒論 1
1-1 前言 …..1
1-2 研究動機 2 1-3 論文結構 2
第二章 拉曼放大器原理與參數設計 3
2-1 拉曼散射簡介 3
2-2 受激拉曼散射 5
2-3 拉曼光纖放大器的基本架構 6
2-3-1前向泵激放大架構 6
2-3-2後向泵激放大架構 8
第三章 摻鉺光纖放大器原理參數設計 11
3-1 傳統波段摻鉺光纖放大器 11
3-1-1摻鉺光纖放大器的基本原理 11
3-1-2泵激光源 12
3-1-3泵激方式 13
3-1-4光隔離器 14
3-2 光放大器特性參數的定義 15
3-2-1增益 15
3-2-2雜訊指數 15
3-2-3輸出飽和功率 16
3-3 摻鉺光纖放大器的特性 16
3-3-1摻鉺光纖放大器的優點 16
3-3-2摻鉺光纖放大器的應用 17
3-3-3摻鉺光纖的結構 17
3-3-4泵激光源的比較 18
3-3-5決定EDFA特性之因素 19
第四章 混合式Raman/EDFA放大器設計與模擬 20
4-1 單一拉曼放大器雙泵激架構 20
4-2 混合式Raman/EDFA放大器 25
4-2-1拉曼後向雙泵激波長設計與模擬 25
4-2-2拉曼後向雙泵激功率設計與模擬 28
4-3 摻鉺光纖放大器之參數設計與模擬 32
4-3-1摻鉺光纖長度設計與模擬 32
4-3-2摻鉺光纖放大器之泵激型式與模擬 35
4-4 增益平坦度之改善 38
第五章 結論與未來展望 42
5-1 結論 42
5-2 未來展望 43
參考文獻 44

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