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研究生:顏宇聰
研究生(外文):Yu-Tsung Yan
論文名稱:架構於串接布雷格光柵與陣列波導光柵之非同步光訊分碼多工網路
論文名稱(外文):Asynchronous Optical CDMA Networks Structured on Cascaded Fiber Bragg Grating and Arrayed Waveguide Grating Devices
指導教授:黃振發黃振發引用關係
指導教授(外文):Jen-Fa Huang
學位類別:碩士
校院名稱:國立成功大學
系所名稱:電機工程學系碩博士班
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:2002
畢業學年度:90
語文別:英文
論文頁數:65
中文關鍵詞:最大長度碼陣列波導光柵布雷格光柵光訊分碼多工
外文關鍵詞:M-sequencesAWGOCDMAFBG
相關次數:
  • 被引用被引用:0
  • 點閱點閱:179
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  • 下載下載:37
  • 收藏至我的研究室書目清單書目收藏:1
在這篇論文中,我們提出一個非同步光訊分碼多工網路,串接在布雷格光纖光柵與陣列波導光柵的架構,這可以提高系統使用者的數目。我們利用光譜作編碼來完成光纖分碼多工網路,並運用最大長度碼的特性,使我們可以在接收端以平衡檢測來得到使用者的資訊。

為了達到編碼的目的,布雷格光纖光柵需以串連方式來架構光纖分碼多工系統,然而,當使用者數目增加,所需要的最大長度碼變大,光纖光柵所佔的長度也變長,這使得原本可以忽略的一些非理想化特性變的不可忽視。為了增加使用者數目,而又要降低非理想特性的影響,我們採取另一方法,將幾個使用者視為一個群,在中間增加了一階陣列波導光柵的架構,利用陣列波導光柵分波多工的特性搭配延遲線來對經過光纖光柵編碼過的一個群的使用者訊號再一次編碼。

而在另一方面,延遲線在陣列波導光柵分配的特性會影響系統的效能,不同的分配方式,亦即是不同的碼會使干擾群的訊號分布在不同的時間上。所以找尋較好的碼,能使其他使用者的干擾降低,改善系統效能,將是未來努力的目標。
In this thesis, an asynchronous optical code-division multiple-access (CDMA) network, which is based on cascaded fiber Bragg grating (FBG) and arrayed waveguide grating (AWG) devices, is proposed, and it allows more users to access the network. In this system, an optical spectrally encoding scheme is devised for CDMA networks, and we use the maximal-length sequence (M-sequence) to perform balanced detection to acquire information of users at the receiver.

The multiple FBGs are cascaded in the system to encode the signals. However, when the number of users increases, length of M-sequence becomes longer and the length of total FBGs required becomes longer too. Therefore, some non-ideal properties, which can be neglected at the short-length code system, become serious. Another alternative is to treat some users as a group, insert a stage of AWG structure, and encode the signal of group by the AWG combined with delay lines.

On the other hand, delay characteristic will affect the performance. Different distribution causes the signals of interference group spread on different time slot. Seeking better code family to reduce the interference of other users will be our future improvement.
Chapter 1. Introduction …………………………………………………1
1-1. Research Motivation.………………………………………………1
1-2. Sections Preview……………………………………………………7
Chapter 2. Overview on Optical CDMA …………………………………10
2-1. Fiber Optic CDMA……………………………………………………10
2-2. Code Families of Optical CDMA.…………………………………15
2-2-1. Optical Orthogonal Codes……………………………………15
2-2-2. Hadamard-Walsh Codes…………………………………………18
2-2-3. M-sequence Codes…………………………………………………19
2-3. Coding Devices of FBG and AWG.…………………………………24
Chapter 3. Optical Grating Devices in DWDM Networks.……………26
3-1. Fiber Bragg Gratings………………………………………………26
3-2. Arrayed Waveguide Gratings………………………………………32
3-3. Tapped Delay Lines…………………………………………………36
Chapter 4. Cascaded FBG and AWG OCDMA Networks……………………39
4-1. FBG_based Optical CDMA Net………………………………………39
4-2. AWG_based Optical CDMA Net………………………………………46
4-3. Cascaded FBG and AWG Encoders/Decoders………………………49
Chapter 5. Performance Evaluation on Cascaded
FBG and AWG Networks.………………………………………55
5-1. The Signal-to-Interference Ratio………………………………55
5-2. Evaluation on System Performance………………………………59
Chapter 6. Conclusions……………………………………………………62
References
[01]. M. Kavehrad and D. Zaccarin, “Optical code-division-multiplexed systems based on spectral encoding of noncoherent sources”, IEEE Journal of Lightwave Technology, Volume: 13, No: 3, pp. 534-545, March 1995.
[02]. J.F. Huang and D.Z. Hsu, “Fiber-grating-based optical CDMA spectral coding with nearly orthogonal M-sequence codes”, IEEE Photonics Technology Letters, Volume: 12, No: 9, pp. 1252-1254, Sept. 2000.
[03]. J.A. Salehi, “Code division multiple-access techniques in optical fiber networks. I. Fundamental principles”, IEEE Transactions on Communications, Volume: 37, No: 8, pp. 824-833, Aug 1989.
[04]. J.A. Salehi and C.A. Brackett, “Code division multiple-access techniques in optical fiber networks. II. Systems performance analysis”, IEEE Transactions on Communications, Volume: 37, No: 8, pp. 834-842, Aug 1989.
[05]. S.W. Lee and D.H. Green, “Coding for coherent optical CDMA networks”, IEE Proceedings-Communications, Volume: 145, No: 3, pp. 117-125, June 1998.
[06]. Kyoungsik Yu, Jongyoon Shin and Namkyoo Park, “Wavelength-time spreading optical CDMA system using wavelength multiplexers and mirrored fiber delay lines”, IEEE Photonics Technology Letters, Volume: 12, No: 9, pp. 1278-1280, Sept. 2000.
[07]. Gerd Keiser, “Optical Fiber Communications”, McGraw-Hill Book Co., USA, pp. 514-516, 2002.
[08]. F.R.K. Chung, J.A. Salehi and V.K. Wei, “Optical orthogonal codes design analysis and applications”, IEEE Transactions on Information Theory, Volume: 35, No: 3, pp. 595-604, May 1989.
[09]. R. Petrovic and S. Holmes, “Orthogonal codes for CDMA optical fibre LANs with variable bit interval”, Electronics Letters, Volume: 26, No: 10, pp. 662-664, May 1990.
[10]. M. Rice, S. Tretter and P. Mathys, “On differentially encoded M-sequences”, IEEE Transactions on Communications, Volume: 49, No: 3, pp. 421-424, March 2001.
[11]. K.O. Hill and G. Meltz, “Fiber Bragg grating technology fundamentals and overview”, Journal of Lightwave Technology, Volume: 15, No: 8, pp. 1263-1276, Aug. 1997.
[12]. Yoshinori Hibino, “An array of photonic filtering advantages arrayed-waveguide-grating multi-demultiplexers for photonic networks”, IEEE Circuits and Devices Magazine, Volume: 16, No: 6, pp. 21-27, Nov. 2000.
[13]. K.O. Hill, Y. Fujii, D.C. Johnson and B.S. Kawasaki, “Photosensitivity in optical fiber waveguides: Application to reflection filter fabrication”, Appl. Phys. Letter, Volume: 32, pp. 647-649, 1978.
[14]. D.Z. Anderson, V. Mizrahi, T. Erdogan and A.E. White, “Production of in-fiber gratings using a diffractive optical element”, Electron Letter, Volume: 29, pp. 566-568, 1993.
[15]. I.P. Kaminow, C.R. Doerr, C. Dragone, T. Koch, U. Koren, A.A.M. Saleh, A.J. Kirby, C.M. Ozveren, B. Schofield, R.E. Thomas, R.A. Barry, D.M. Castagnozzi, V.W.S. Chan, B.R. Hemenway, D. Marquis, S.A. Parikh, M.L. Stevens and E.A. Swanson, “A wideband all-optical WDM network”, IEEE Journal on Selected Areas in Communication, Volume: 14, pp. 780-199, 1996.
[16]. D. Wang, G. Jin, Y. Yan and M. Wu, “Aberration theory of arrayed waveguide grating”, Journal of Lightwave Technology, Volume: 19, No: 2, pp. 279-284, Feb. 2001.
[17]. L.R. Chen, “Technologies for hybrid wavelength-time optical CDMA transmission”, Conference on Electrical and Computer Engineering, 2001. Canadian, Volume: 1, pp. 435-440, 2001.
[18]. G. Lenz, B.J. Eggleton, C.K. Madsen and R.E. Slusher, “Optical delay lines based on optical filters”, IEEE Journal of Quantum Electronics, Volume: 37, No: 4, pp. 525-532, April 2001.
[19]. R. Khosravani, M.L. Hayee, B. Hoanca and A.E. Willner, “Reduction in coherent cross talk in WDM add-drop multiplexing nodes by path-length misalignment”, Lasers and Electro-Optics, 1998. CLEO 98. Technical Digest. Summaries of papers presented at the Conference on , pp. 26-27, 1998.
[20]. E. Park, A.J. Mendez and E.M. Garmire, “Temporal/Spatial optical CDMA networks-design, demonstration, and comparison with temporal networks”, IEEE Photonics Technology Letters, Volume: 4, No: 10, pp. 1160-1162, Oct 1992.
[21]. E.S. Shivaleela, K.N. Sivarajan and A. Selvarajan, “Design of a New Family of Two-Dimensional Codes for Fiber-Optic CDMA Networks”, Journal of Lightwave Technology, Volume: 16, No: 4, pp. 501-508, April 1998.
[22]. K. Yu, J. Shin and N. Park, “Wavelength-Time Spreading Optical CDMA System Using Wavelength Multiplexers and Mirrored Fiber Delay lines”, IEEE Photonics Technology Letters, Volume: 12, No: 9, pp. 1278-1280, Sep 2000.
[23]. T.W.F. Chang and E.H. Sargent, “Optical CDMA Using 2-D Codes: The Optimal Single-User Detector”, IEEE Communications Letters, Volume: 5, No: 4, pp. 169-171, April 2001.
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