臺灣博碩士論文加值系統

本論文的主旨在研究提升微波光纖通訊系統效能的方法與應用。在微波光纖通訊
系統的研究部分，包括研究WiMAX 無線信號的基本特性、VCSEL 及DFB 雷射的不
同特性之間的比較、雷射直流偏壓線性區的測試，連接單模與多模光纖的比較。在光
注入鎖定的研究部分，我們驗證了光注入能提升系統效能，並且發現數種特性，包含
雷射光功率的改變，信號的IMD3 改變，注入波長範圍的分析，光注入功率的影響，
及光注入提升頻率響應的應用，最後將其應用在一個低成本的架構。在低頻重疊的實
驗部分，我們驗證了低頻重疊能有條件地提升系統效能，並且發現數種特性，包含可
提升系統效能之規律性，以及數個規律頻率下信號品質的差異。這些技術的架構與特
性已詳盡的驗證與分析，預期成果將有助於微波光纖通訊系統的發展。

In this dissertation, we study the improvement of radio-over-fiber communication systems and applications. The content about RoF communication system applications including the basic characteristics of WiMAX wireless signal, the comparison between the different characteristics of VCSEL and DFB laser, the test of laser DC bias linear area, and the comparison of connection with the multi-mode and single-mode fiber. In the research of injection-locked, we verify the injection-locked can improve system performance, and found a number of characteristics, including laser optical power changes, the IMD3 changes, the wavelength range of injection-locked, and enhance the frequency response into the application, and last use its characteristics into a low-cost structure. In the experimental low-frequency superposition part, we can verify the low-frequency superposition conditions improve system performance, and found a number of characteristics, enhance the performance of the system , and find the regularity of frequency in signal quality. These structure and characteristics of the technologies have be verification and analysis, These results will be useful in the development of RoF communications system.

致謝………………………………………………………………………………………I
中文摘要…………………………………………………………………………………II
英文摘要…………………………………………………………………………………III
目錄………………………………………………………………………………………IV
圖次目錄…………………………………………………………………………………VI
縮字目錄…………………………………………………………………………………IX
第一章
導論
1.1 微波光纖通訊系統之回顧…………………………………………………………1
1.2 無線通訊標準IEEE 802.16e-2005 之回顧………………………………………3
1.3 提升光纖通訊系統傳輸效能技術之回顧…………………………………………4
1.3.1 光注入鎖定技術…………………………………………………………………5
1.3.2 低頻信號重疊技術………………………………………………………………6
1.4 論文架構……………………………………………………………………………7
第二章
微波光纖基本架構
2.1 傳送端……………………………………………………………………………9
2.1.1 RF 信號 無線通訊標準802.16e-2005………………………………………9
2.1.2 用於微波光纖系統之雷射光源………………………………………………14
2.2 實驗架構…………………………………………………………………………15
2.3 實驗………………………………………………………………………………17
2.3.1 Ith 和頻率響應…………………………………………………………………17
2.3.2 RF 信號強度&DC 偏壓關係之測量…………………………………………20
2.3.3 連接光纖模擬傳輸測試………………………………………………………23
第三章
光注入鎖定技術
3.1 光注入鎖定簡述…………………………………………………………………26
3.2 光注入鎖定系統架構……………………………………………………………26
3.2.1 光注入鎖定之VCSEL基本測試………………………………………………29
3.2.2 光注入鎖定之DFB 基本測試…………………………………………………29
3.3 三階互調失真(IMD3)之測量……………………………………………………32
3.4 光注入鎖定之注鎖波長範圍測量實驗…………………………………………35
3.5 光注入鎖定之注入光功率測量實驗……………………………………………40
3.6 光注入鎖定時RF信號強度影響系統效能之測量………………………………45
第四章
低頻信號重疊技術
4.1 低頻信號重疊技術簡述……………………………………………………………49
4.2 低頻信號重疊系統架構……………………………………………………………50
4.3 低頻重疊技術之頻率測試…………………………………………………………52
4.4 低頻重疊技術之提升測試…………………………………………………………54
第五章
結論
5.1 論文總結……………………………………………………………………………55
5.1.1 使用WiMAX 信號的ROF 架構…………………………………………………55
5.1.2 光注入鎖定對系統效能的提升…………………………………………………56
5.1.3 低頻信號重疊對系統效能的提升………………………………………………59
5.2 未來工作與建議……………………………………………………………………60
參考文獻…………………………………………………………………………………61

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