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研究生:郭威廷
研究生(外文):Wei-Ting Kuo
論文名稱:應用於光纖通訊之極化多樣性傳輸結構
論文名稱(外文):Polarization Diversity Transmission Scheme in Optical Communication With consideration of Polarization Mode Dispersion
指導教授:何旻真
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:電機工程學研究所
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:2008
畢業學年度:97
語文別:英文
論文頁數:60
中文關鍵詞:光纖通訊多模極化色散極化多樣性傳輸
外文關鍵詞:optical communicationpolarization mode dispersionpolarization diversity transmission
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隨著科技的發展,網路將提供越來越多多樣化的服務,包括線上收看各種視訊影片、即時影音語音談話、線上網路遊戲等,人們對於傳輸流量的速度、品質的要求,及對網路的依賴性也越來越大。由於光通訊技術的發展,很多過去無法達到的頻寬限制已被突破,我們的網路科技也臻至一個高點。然而由於網路的普及化,許多研究學者仍致力於開發新的傳輸演算法,以達到大眾對頻寬的需求。在WDM技術被廣泛運用之後,如何在其之上做改善成了主要的課題,本論文所闡述”利用光之極化多樣傳輸結構”就是一個相當有潛力的方法。
光之極化多樣傳輸結構為利用光在光纖中所擁有不同的極化狀態,作為編碼演算的一種傳輸系統,本論文研讀了有關Polarization Shift-Keying相關文獻,並且提出了一新式發射器結構,僅用光之線性極化狀態作為編碼,使發射器的成本降至最低,並且首度將極化多模色散Polarization Mode Dispersion考慮至此系統之中,此外,我們利用 Matlab數學軟體模擬比較我們提出的結構及在文獻中的結構,最後以一個初步的實驗來證明我們系統的可行性。
With the development of technology, more and more diverse service are provided through internet, such as various online TV or video, real time voice and video interaction, and online games, etc.. People tend to depend more and more on the internet. Meanwhile, The transmission capacity and the quality requirement is becoming stronger as well. Thanks to the development of optical communication technology, plenty of transmission bandwidth requirements have been fulfilled. However, as the internet spreads over and over the world and among the society, researchers are still devoting themselves to create new transmission algorithm in order to meet people’s needs of capacity. After the WDM (Wavelength Division Multiplexing) is widely used in the State-of-the-Art transmission systems, the way to improve the data capacity on WDM becomes an important issue to many researchers and engineers. The polarization diversity scheme we brought out in this thesis is a promising candidate.
In the polarization diversity schemes, the different states of polarization (SOP) of light are used to encode the binary data instead of the amplitude of light. We surveyed related literatures of Polarization Shift Keying and propose a new transmitter architecture which employs only the linear SOPs of light as the encoder. In this way, the transmitter complexity and cost can be reduced to minimal. Besides, we first introduce the consideration of Polarization Mode Dispersion as a degrading factor to the polarization diversity schemes. We compare also our proposed schemes with the conventional 4-PolSK scheme in the literature. A preliminary experiment is performed to analyze the feasibility of our proposed system.
Contents ..................... 1
Chapter 1 Introduction ............................... 2
Chapter 2 Theory of Polarization Mode Dispersion ....... 4
2.1 State of Polarization (SOP) of Light ............ 4
2.1.1 Expressions of Polarization of Light............. 6
2.2 Polarization Mode Dispersion.................... 13
2.3 Principle States of Polarization and the First- Order PMD ............ 14
Chapter 3 Numerical Channel Model under PMD ......... 18
3.1 Rotation Matrix and DGD Matrix ................ 18
3.2 PMD Channel......... 20
3.3 Additive White Gaussian Noise .................. 21
3.4 Verification of our Channel Model ................. 22
Chapter 4 Polarization Diversity Scheme .............. 25
4.1 Basic Concepts of Polarization Diversity Scheme.... 25
4.1.1 Constellation Diagram of Polarization Shift Keying ...... 26
4.2 Configuration of Polarization Diversity Scheme ......... 29
4.3 Transmitter Design ........................... 30
4.4 Receiver Design .............. 31
4.5 Decision Algorithm ........................ 33
Chapter 5 Simulation and Experiment Results of Polarization Diversity Scheme 36
5.1 Simulation Results ........................... 36
5.1.1 Simulation Flow ..................... 37
5.1.2 Simulation Results ............................. 38
5.2 Experiment Results ........................... 53
Chapter 6 Conclusion .................................. 59
ch.1
[1] Sergio Benedetto et al., “Theory of Polarization Shift Keying Modulation”, IEEE Transaction on Communication, vol. 40, No. 4, (1992).
[2] C. D Poole, ”Phenomenological approach to polarization mode dispersion in long single mode fiber.” Electronics Letter, vol. 22 No. 19, (1986).

ch.2
[1] Serge Huard, Polarization Of Light, 1st ed. John Wiley & Sons, Belgium, (1997).
[2] Wikipeida: Polarization_of_light: http://en.wikipedia.org/wiki/Polarization_of_light.
[3] Lawrence E. Spence et al, Elementary Linear Algebra: A Matrix Approach, Prentice Hall, (2000).
[4] Ivan Kaminov and Tingye Li, Optical Fiber Telecommunications systems and impariments, IVB. Academic Express, (2002)
[5] C. D Poole, “Phenomenological approach to polarization mode dispersion in long single mode fiber,”Electronics Letter, vol. 22, no. 19, pp (1029-1030) ,(1986).

ch.3
[1] Hong Chen et al, “ A One-Input Two-Output Channel Representation of Single-Mode Fibers With PMD”, Jounal of Lightwave Tech., Vol. 21, No. 3, March (2003).
[2] Ivan Kaminov and Tingye Li: Optical Fiber Telecommunications systems and impariments, IVB. Academic Express, (2002).

ch.4
[1] C. D Poole, ”Phenomenological approach to polarization mode dispersion in long single mode fiber.” Electronics Letter, vol. 22 No. 19, (1986).
[2] Sergio Benedetto et al., “Theory of Polarization Shift Keying Modulation”, IEEE Transaction on Communication, vol. 40, No. 4, (1992).
[3] G..P.Agrawal: Nonlinear Fiber Optics, 3rd ed. (Academic Press, San Diego, Calif, (2001).

ch.5
[1] Sergio Benedetto et al., “Multilevel Polarization Shift Keying: Optimum Receiver Structure and performance Evaluation”, IEEE Transaction on Communication, vol. 42, No. 2/3/4, (1994).

ch.6
[1] Sergio Benedetto et al., “Theory of Polarization Shift Keying Modulation”, IEEE Transaction on Communication, vol. 40, No. 4, (1992).
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