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研究生:吳彥德
研究生(外文):Samuel. Wu.
論文名稱:以混合式光纖放大器來改進傳統摻鉺光纖放大器的效能
論文名稱(外文):Improving the Performance Conventional EDFA Using Hybrid Fiber Amplifier in Optical WDM Systems
指導教授:黃忠偉黃忠偉引用關係
學位類別:碩士
校院名稱:國立臺灣科技大學
系所名稱:電子工程系
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:2001
畢業學年度:89
語文別:英文
論文頁數:32
中文關鍵詞:拉曼放大器摻鉺光纖放大器增益控制混合式光纖放大器
外文關鍵詞:Raman amplifiererbium doped fiber amplifierGain ControlHybrid Fiber Amplifier
相關次數:
  • 被引用被引用:1
  • 點閱點閱:252
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  • 下載下載:0
  • 收藏至我的研究室書目清單書目收藏:0
在這篇論文中,我們提出一種混合式的光纖放大器來提升傳統光纖摻鉺放大器的系統效能,而這種混合式的光纖放大器,就是將摻鉺光纖放大器和拉曼光纖放大器串接,利用拉曼光纖放大器的高增益來補償光纖的損失,並利用L頻段的摻鉺光纖光纖放大器,來擴增傳輸容量,而我們將進一步探討如何利用現有的傳統摻鉺光纖放大器,來製做L頻段的摻鉺光纖光纖放大器,由於拉曼光纖放大器是一種跨頻段的光纖放大器,我們利用這種特性來補償L和C頻段光纖的損失。
在設計的過程中,我們會找出每一個元件最佳的工作點,並加以配搭。並設計一個增益控制模組來使整個系統更穩定,最後模擬出這種新式的混合式的光纖放大器,證明它可使原傳統摻鉺光纖放大器升級的可行性。

In the thesis, we propose a novel hybrid fiber amplifier, and it is connected with erbium-doped fiber amplifier and fiber Raman amplifier. The hybrid fiber amplifier structure can provide the property of both EDFA and Raman amplifier. It maintains the stabilization of EDFA character and has great gain of Raman amplifier. We add L-band EDFA to extend transmission bandwidth. The L-band EDFA is made by conventional erbium doped fiber, utilizing the phenomenon of EDFA gain shift. Therefore, we utilize L-band EDFA to extend transmissible capacity. Because the Raman amplifier can be operated at any wavelength windows, it can compensate the C-band and L-band of amplifier. For Raman amplifier, the C-band and L-band can be used. It just needs to adjust the wavelength of Raman pump. Because it strongly depended on the wavelength and power of Raman pump, it is a broadband component, and it is widely used.
The novel hybrid fiber amplifier can bring great capacity for conventional EDFA. It used bidirectional data flowed to help upgrade the sys

Table of Contents
List of Figures
List of Table
Chapter 1 Introduction
Chapter 2 Problem Formulation
2.1 Conventional Erbium-Doped Fiber Amplifiers
2.2 L-band EDFA
2.3 EDFA Gain Control
2.4 Fiber Raman Amplifier
2.5 A Novel Hybrid Optical Amplification
Chapter 3 Theoretical Analysis of Raman Amplifier and EDFA
3.1 Fiber Nonlinearities
3.2 Stimulated Raman Scattering
3.3 Fiber Raman Amplifier
3.3.1 Raman Gain
3.3.2 Gain Saturation
3.4 Rayleigh Scattering
3.5 Erbium Doped Fiber Amplifier
3.5.1 Energy Levels for EDFA
3.5.2 Gain for EDFA
Chapter 4 Numerical Result
4.1 Conventional Erbium-Doped Fiber Amplifier
4.2 L-band Erbium-Doped Fiber Amplifier
4.3 Gain Clamp for EDFA
4.4 Fiber Raman Amplifier
4.5 A Novel Hybrid Fiber Amplification by Bidirection
Chapter 5 Conclusion
References

[1] E.M Dianov, and A.A Abramov,“30 dB gain Raman amplifier at 1.3μm in lowloss high GeO -doped silica fibres”Electronics Letters,Vol. 31 No. 13, 22nd June1995
[2] D.M. Spirit, and L.C. Blank, “Systems aspects of Raman fibre amplifiers”IEE Proceedings, Vol.1 37, Pt.J, No. 4, August1990
[3] L.D Garrett, and Senior Member,“Field Demonstration of Distributed Raman Amplification with 3.8-dB Q-Improvement for 5X120-km Transmission”IEEE Photonics Technology Letters, Vol. 13, No. 2, February2001
[4] P. Bousselet, and M. Bettiati,“+26 dBm output power from an engineered cladding-pumped ytterbium-free EDFA for Lband WDM applications”Electronics Letters Vol. 36, No. 16, 3rd August 2000
[5] A. Mathur, and M. Ziari,“Over 1W fibre-coupled power from single semiconductor source for pumping of Raman fibre amplifiers and erbium-doped fibre amplifiers”Electronics Letters Vol. 36, No. 5, 2nd March 2000
[6] F. Neddam, and P. Le Lourec,“Analytical optimization of dispersionmanaged soliton propagation in long-haul WDM systems and experimental verification”Electronics Letters Vol. 35, No. 13, 24th June 1999
[7] K. Takada, and H. Yamada,“480channel 10GHz spaced multi/demultiplexer”Electronics Letters Vol. 35, No. 22, 28th October 1999
[9] Y. Emori, and Y.Akasaka,“Broadband lossless DCF using Raman amplification pumped by multichannel WDM laser diodes”Electronics Letters Vol. 34, No. 22, 29th October 1998
[10] B. Heens, and X. Wang,“Improvement of the EDFA Design for Both Preamplifier and Booster Applications”
[11] A.Buxens, and H.N. Poulsen, “Gain flattened L-band EDFA based on upgraded C-band EDFA using forward ASE pumping in an EDF section”Electronics Letters Vol. 36, No. 9, 27th April 2000
[12] S.A.E. Lews, and S.V. Chernikov“Broadband high-gain dispersion compensating Raman amplifier”Electronics Letters Vol. 36, No. 16, 3th August 2000
[13] I. Morita, and K. Tanaka“Benrfit of Raman amplification in ultra-longdistance 40Gbit/s-based WDM transmission using dispersion-flattened fibre span”Electronics Letters Vol. 37, No. 8, 12th April 2001
[14] S.A.E. Lewis, and S.V. Chernikov,“Characterization of Double Rayleigh Scatter Noise in Raman Amplifiers”IEEE PBOTONIC TECBNOLOGY Letters, Vol. 12, No. 5, May 2001
[15] M. Nissov, and K. Rottwitt, “Rayleigh crosstalk in long cascades of distributed unsaturated Raman amplifiers”Electronics Letters Vol. 35, No. 12, 10th June 1999
[16] Dennis Derickson,“Fiber Optic Test and Measurement”HEWLETT-PACKARD PROFFESSIONAL BOOKS, 1998
[17] John Powers“An Introduction To FIBER OPTIC SYSTEMS”IRWIN, 1997
[18] Chia-Chi Wang, and Gregory J. Cowle“Optical Gain Control of Erbium-Doped Fiber Amplifiers with a Saturable Absorber”IEEE PHOTONICS TECHNOLOGY LETTERS, Vol. 12, No. 5, May 2000
[19] N. Shirnojoh, and T Naito“640Gbit/s(64X10Gbit/s)WDM transmission over 10,127km using L-band EDFAs”ELECTRONICS LETTERS Vol. 36, No. 2, 20th January2000
[20] K.P. Hansen, and M.D. Nielsen“Design potimisation of erbium-doped fibers for use in L-band amplifiers ”ELECTRONICS LETTERS Vol. 36, No. 20, 28 September 2000
[21] A.R. Pratt, and K. Fujii“Gain Control in L-Band EDFAs by Monitoring Backward Traveling C-Band ASE”IEEE PHOTONICS TECHNOLOGY LETTERS Vol. 12, No. 8, August 2000

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