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研究生:黃鈺勝
研究生(外文):Yu-Sheng Huang
論文名稱:具多優點之混合型光纖放大器研究
論文名稱(外文):Study on Multiple-merit Hybrid Fiber Amplifiers
指導教授:廖顯奎
指導教授(外文):Shien-Kuei Liaw
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:電子工程系
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:2009
畢業學年度:97
語文別:中文
論文頁數:104
中文關鍵詞:光纖放大器拉曼效應光纖光柵色散補償
外文關鍵詞:Fiber amplifierRaman effectFiber gratingDispersion compensation
相關次數:
  • 被引用被引用:3
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  • 下載下載:21
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本論文致力於多特性優化之混合型光纖放大器研究,設計核心理念如下:高增益、低雜訊、較寬的增益波段、增益平坦、增益箝制、單波長泵激雷射的使用、提升泵激功率的使用效率以及精確的色散補償等。內容主要分為三部分:第一部分為傳統式與反射式架構於摻鉺及拉曼光纖放大器的實驗與結果討論,在相同的泵激功率激發下反射式架構能提供更高的增益,但對兩種光纖放大器帶來的影響如下:(1)對於摻鉺光纖放大器而言,雜訊指數變差了!主要源於雜訊包含了後向放大自發輻射與放大後的前向放大自發輻射;(2)對於拉曼光纖放大器而言,自發式拉曼散射的影響較為嚴重,也需注意極化相關增益之影響,使用反射架構極化之影響更大!。此部分內容主要分析增益提升架構,所帶來的優勢與缺陷。
第二部分為論文主軸,主要分析串聯式與並聯架構之放大特性,藉由實驗量測與結果討論,此兩大類架構具有不同的特性輸出,如串聯式架構之優勢在於使用最少的泵激雷射便能得到高增益輸出;而並聯式架構優勢在於能降多通道時訊號間增益的干擾,最後整理出此兩類架構所具有的特性。此部分之討論主要為:高增益、低雜訊、寬增益波段、單波長泵激雷射使用、單綑色散補償光纖的作訊號的色散補償。
第三部分為克服上述架構中殘餘色散的問題,並討論增益等化技術,藉由OptiSystem軟體模擬的方式進行,,最後也提出能改善殘餘色散問題的技術,主要作法為使用光纖光柵搭配長短不等的色散光纖作為新的色散補償模組,如此一來各波長訊號皆能獲得最理想的色散補償程度。而在增益等化方面可藉由調整各光纖光柵的反射率來達成,在適當反射率下各波長訊號能有同樣的增益輸出,增益變動量約為±0.5dB以內。因此經由上述的實驗與模擬結果,本論文成功提出了多功能優化特性之混合型光纖放大器。
In this thesis, we focus on the research of hybrid fiber amplifier (HFA) with multi-characteristics. The major properties of HFA includes: high gain, low noise figure (N.F.), broadband amplification, gain equalization and clamping and accurate dispersion compensation. We use single Pump LD to design the broadband HFA and improve the efficiency of pump power using. This thesis is divided into three parts: the first part is the experiment and discussion of EDFA and RFA with conventional and reflective configurations. The major advantage of reflective configuration is gain improvement with same pump power. But the impacts of the two amplifiers have more worser N.F. for EDFA and higher PDG for RFA, respectively. In this part, we discuss the merit and defect of the gain enhancement amplifier scheme.
The second part is to analyze the properties of serial and parallel type HFAs. We may understand the major difference of the two types HFAs by analyzing the experimental results. For example, the property of serial type is high gain with lower pump power and the parallel type is to reduce the gain inter-impact in multi-wavelengths amplification. In this part, the characteristics we discuss includes: high gain, low N.F., broadband amplification, using single pump LD and dispersion compensation with a segment of DCF.
The major issue of the third part is to conquer the residual dispersion problem and discuss the gain equalization technology. This part uses OptiSystem 6.0 to simulate the HFA scheme. For the first issue, we proposd a new configuration to solve the residual dispersion. The major method is new DCM design, it includes several FBGs with specific wavelengths and different length of DCFs. Therefore, the accurate dispersion compensation for different wavelengths is realized. For the gain equalization, we can adjust the reflectivity of FBG with specific wavelength to realize this characteristic, and the gain variation can be controlled within ±0.5dB. In summary,we have successfully proposed a hybrid fiber amplifier (HFA) in multi-characteristics configuration.
第一章 緒論 1
1-1 前言 1
1-2 研究動機 1
1-3 論文架構 2
第二章 光纖放大器文獻探討 4
2-1 摻鉺光纖放大器 4
2-2 拉曼光纖放大器 10
2-3 C+L Band光纖放大器 18
第三章 串聯式混合型光纖放大器 22
3-1 C-band摻鉺光纖放大器 22
3-2 L-band拉曼光纖放大器 29
3-3 串聯式混合型光纖放大器 36
3-3-1 串聯架構(一) 36
3-3-2 串聯架構(二) 38
3-3-3 串聯架構(三) 40
3-4串聯架構於多通道時之放大 43
第四章 並聯式混合型光纖放大器 50
4-1 並聯式架構 50
4-1-1前言 50
4-1-2並聯架構(一) 51 4-1-3並聯架構(二) 53
4-2 並聯架構(三) 54
4-3 並聯架構(四) 57
4-4 結果與討論 59
4-4-1並聯架構比較 59
4-4-2串聯與並聯架構的比較 61
4-4-3增益箝制技術(Gain clamping,GC) 64 第五章 多特性之混合型光纖放大器研究 69
5-1 拉曼光纖放大器之殘餘色散問題討論 69
5-2多特性之混合型光纖放大器模擬 71
5-2-1模擬架構(一) 71
5-2-2模擬架構(二) 75
5-3 結果與討論 80
第六章 結論與未來展望 82
6-1 結論 82
6-2 未來展望 84
參考文獻 85
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