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博碩士論文 etd-0624100-162520 詳細資訊
Title page for etd-0624100-162520
論文名稱
Title
相位強度轉換傳輸技術之研究
The Study of Phase-Intensity Conversion Transmission Method
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
46
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2000-06-15
繳交日期
Date of Submission
2000-06-24
關鍵字
Keywords
相位強度轉換
phase-intensity conversion
統計
Statistics
本論文已被瀏覽 5672 次,被下載 1575
The thesis/dissertation has been browsed 5672 times, has been downloaded 1575 times.
中文摘要
在本論文中,我們首次提出以相位強度轉換作傳輸的外部調變光通信架構。我們描述了相位強度轉換的基本原理,以及此種系統中會引入的雜訊,包括雷射光源雜訊和摻鉺光纖放大器的雜訊的分析,並安排實驗探討在相位強度轉換傳輸理論中各種變量對系統性能的影響,這些變量包括光源線寬、相位調變深度、色散元件的色散量大小及摻鉺光纖放大器的使用。

最後我們在10公里單模光纖中成功的完成了對AM-VSB類比信號進行強度調變和對QAM數位信號進行相位調變的系統實驗,在接收端我們採用了頻擾式光纖光柵元件對QAM信號進行相位強度轉換,其中AM-VSB類比信號之載波雜訊比CNR可達57~61 dB,而QAM數位信號之誤碼率BER為6.8´10-9。因此,同時進行強度調變與相位調變之相位強度轉換傳輸方式確實可行,而系統應用上,這種相位強度轉換傳輸之技術可應用在光的加密解密系統。
Abstract
In this thesis, we present the phase-intensity conversion transmission method for the first time. We analyze phase-intensity conversion theory, laser diode noise, and EDFA noise. By experiment, we investigate the impact of the parameters in phase-intensity conversion such as light source linewidth, phase modulation index, dispersion magnitude, and EDFA on the system performance. We successfully demonstrated simultaneous transmission of one AM-VSB channel through intensity modulation and one QAM channel through phase modulation over 10 km single mode fiber using LiNbO3 external modulator. The system performance with CNR of 57~61 dB for the AM-VSB channel and BER of 6.8´10-9 for the QAM channel can be achieved. The demonstration and the experimental results confirm the feasibility of phase-intensity conversion techniques. Potentially, the phase-intensity conversion transmission method could be applied on optical encryption and decryption systems.
目次 Table of Contents
第一章 序論
第二章 理論分析
第三章 實驗結果與討論
第四章 結論
參考文獻 References
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13. W. I. Way, Broadband Hybrid/Coax Access System Technologies, chapter 6, Academic Press, 1998.
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