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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 |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
46 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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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 |
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統計 Statistics |
本論文已被瀏覽 5672 次,被下載 1575 次 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 |
1. G. C. Wilson, T. H. Wood, “Suppression of SBS and MPI in analog systems with integrated electroabsorption modulators/DFB laser transmitters,” Tech. Dig. 1996 optical Fiber Communication Conference (OFC ’96), paper ThR1. 2. G. P. Agrawal, Fiber-Optic Communication System, chapter 2, John Wiley & sons, New York, 1997. 3. C. S. Ih, “Fiber induced distortions in a subcarrier multiplexed lightwave system,” IEEE J. Selected Areas in Communications, vol. 8, no. 7, pp. 1296-1299, 1990. 4. J. Wang and K. Petermann, “Small signal analysis for dispersive optical fiber communication systems,” J. Lightwave Technology, vol. 10, no. 1, pp. 96-100, 1992. 5. K. Petermann and J. Wang, “Large signal analysis of FM-AM conversion in dispersive optical fibers and its application to PCM systems, ” Electronics Letters, vol. 27, no. 25, pp. 2347-2348, 1991. 6. A. Cartaxo, “Influence of fiber nonlinearity on phase noise to intensity noise conversion in fiber transmission: theoretical and experimental analysis,“ J. Lightwave Technology, vol. 16, no. 7, pp. 1187-1194, 1998. 7. S. Yamamoto, “Analysis of laser phase noise to intensity noise conversion by chromatic dispersion in intensity modulation and direct detection optical-fiber transmission,“ J. Lightwave Technology, vol. 8, no. 11, pp. 1716-1722, 1990. 8. K. Petermann, “FM-AM conversion in dispersive singlemode fiber transmission lines,“ Electronics Letters, pp. 2097-2098, 1990 9. E. Desurvire, Erbium-Doped Fiber Amplifiers, chapter 5, John Wiley & sons, New York, 1994. 10. S. Ryu, “Novel chromatic dispersion measurement method over continuous gigahertz tuning range,” J. Lightwave Technology, vol. 7, no. 8, pp. 1177-1180, 1989. 11. F. Devaux, “Simple measurement of fiber dispersion and of chirp parameter of intensity modulated light emitter,“ Journal of Lightwave Technology, vol. 11, no. 12, December 1993. 12. B. J. Eggleton, “Dispersion compensation using a fiber grating in transmission,“ Electronics Letters, vol. 32, no. 17, 15th August 1996. 13. W. I. Way, Broadband Hybrid/Coax Access System Technologies, chapter 6, Academic Press, 1998. |
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