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研究生: 施志偉
Chih-wei Shih
論文名稱: 環型被動鎖模光纖雷射應用之研究
The Study on the Application of Ring Passive Mode-Locking Fiber Lasers
指導教授: 劉政光
Cheng-kuang Liu
口試委員: 李三良
San-Liang Lee
葉秉慧
Ping-hui Yeh
賴富順
Fu-shun Lai
學位類別: 碩士
Master
系所名稱: 電資學院 - 電子工程系
Department of Electronic and Computer Engineering
論文出版年: 2007
畢業學年度: 95
語文別: 中文
論文頁數: 71
中文關鍵詞: 被動鎖模主動鎖模光纖雷射半導體光放大器電光調變器真波光纖費布里-泊洛 雷射二極體
外文關鍵詞: passive mode-lock, active mode-lock, fibr laser, semiconductor optical amplifier, electro-optic modulator, TrueWave fiber, Fabry-Perot laser diode
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本論文以簡單且輸出穩定的自製環型被動鎖模光纖雷射為主,製作一個輸出光功率等化的波長可調式雷射光源,並試驗了背接、25公里與35公里的一般單模光纖、40公里真波光纖與40公里LEAF光纖兩種特定非零色散位移光纖經色散補償後的傳輸效果,最後並嘗試注入費布里-泊洛雷射二極體鎖模,進行直接調變效能量測。
論文中,展示數種實驗架構,含環型主動諧波鎖模、環型有理數諧波鎖模、加電光調變器之環型被動鎖模、無電光調變器之環型被動鎖模。也探討無電光調變器之環型被動鎖模架構中,放置半導體光放大器造成的影響,並與一台可調式半導體雷射光源作效能比較。


In this thesis, we demonstrate ring passive mode-locking fiber lasers that are simple and stable, and their use as wavelength tunable laser sources which have equalized output power. The transmission characteristics have been studied among the back to back transmission, the 25km and 35km standard single-mode fiber, the 40km TrueWave fiber and 40km LEAF fiber of the non-zero dispersion shifted fiber. The dispersion effect on the transmission in the two special fibers is also studied. Finally, an attempt is made to inject the fiber laser output into Fabry-Perot laser diode, and to study the direct modulation effect.

Several experimental structures are shown in this thesis, including a ring active harmonic mode-locking structure, a ring rational active harmonic mode-locking structure, a ring passive mode-locking structure with electro-optic modulatior, and a ring passive mode-locking structure without electro-optic modulatior. And, we also discuss the influence of the use of a semiconductor optical amplifier on the ring passive mode-locking structure without electro-optic modulator, and compare its characteristics with that of a tunable semiconductor laser source.

論文摘要 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I ABSTRACT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . II 誌謝 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . III 目錄 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . IV 圖索引 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . VII 表索引 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . X 第一章 緒論 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1.1前言......................................................................................................1 1.2研究動機.............................................................................................2 1.3章節簡介........................................................................................3 第二章 相關組件基本理論. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2.1半導體光放大器(semiconductor optical amplifier,SOA) .............................................................................................................4 2.2電光調變器(electro-optic modulator) ......................................... 6 2.3特定光纖......................................................................................10 2.3.1真波光纖 ..........................................................................11 2.3.2 LEAF光纖.........................................................................13 2.3.3色散補償光纖........................................................................14 2.4色散......................................................................................................15 2.4.1模態色散(modal dispersion) ..........................................15 2.4.2材料色散(material dispersion) ....................................16 2.4.3波導色散(waveguide dispersion) ..................................16 2.5損耗......................................................................................................17 2.6光纖中非線性效應............................................................................17 2.6.1四波混頻.................................................................................17 2.6.2自相位調變............................................................................18 2.6.3交叉相位調............................................................................19 2.7數位通訊量測參數............................................................................19 2.7.1訊雜比.....................................................................................19 2.7.2誤碼率.....................................................................................20 2.7.3熄滅比.....................................................................................21 2.7.4靈敏度.....................................................................................21 2.7.5眼形圖.....................................................................................21 第三章 環型光纖雷射之架構與特性量測. . . . . . . . . . . . . . . . . . . . . . .22 3.1 鎖模機制探討.................................................................................22 3.1.1 環型主動諧波鎖模.........................................................22 3.1.2 環型有理數主動諧波鎖模............................................25 3.1.3 環型被動鎖模..................................................................28 3.2有無半導體光放大器環型被動鎖模光纖雷射機制探討...........30 3.3環型被動鎖模光纖雷射特性量測.................................................32 3.4自製被動鎖模光纖雷射與可調式半導體雷射(tunable semiconductor laser source,TSLS)比較...........................35 第四章 環型被動光纖雷射之應用. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 4.1輸出光功率穩定且等化的波長可調式雷射光源.......................40 4.2 利用不同特性之特定長距離光纖進行調變傳輸......................44 4.3 注入費布里-泊洛雷射二極體鎖模之調變傳輸........................50 第五章 結論. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . .53 5.1成果與討論.......................................................................................53 5.2未來研究方向...................................................................................54 參考文獻. . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . . . . . . . . . .55

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