利用不同調變格式在高速長距離高密度分波多工傳輸系統之研究與設計

Study and Design of the Advanced Modulation Formats in High Speed Long-Haul DWDM Transmission System

林牧遠(Mu-Yuan Lin)

指導教授 ： 賴柏洲

國立臺北科技大學/電資學院/電腦與通訊研究所/碩士(2010年)

摘要

本論文是利用摻鉺光纖放大器(Erbium Doped Fiber Amplifier；EDFA)搭配不同的傳輸光纖以及色散補償光纖(Dispersion Compensation Fiber；DCF)組合不同的光路配置，並且測試非歸零開關鍵制(Nonreturn to Zero-On Off Keying；NRZ-OOK)、歸零開關鍵制(Return to Zero-On Off Keying；RZ-OOK)、載波抑制歸零開關鍵制(Carrier Suppressed Return to Zero-On Off Keying；CSRZ-OOK)、非歸零差動相位偏移鍵制(Nonreturn to Zero-Differential Phase Shift Keying；NRZ-DPSK)、歸零差動相位偏移鍵制 (Return to Zero-Differential Phase Shift Keying；RZ-DPSK)、載波抑制歸零差動相位偏移鍵制(Carrier Suppressed Return to Zero-Differential Phase Shift Keying；CSRZ-DPSK)等六種調變格式於10Gbit/s以及40Gbit/s傳輸速度，並應用在長距離高密度分波多工(Dense Wavelength Division Multiplexing；DWDM)系統傳輸之效益。
　　在本論文模擬實驗中，我們將使用兩個EDFA作為線上放大器，補償一個區段光纖損失的傳輸系統，我們模擬對40×40Gbit/s以及160×10Gbit/s在總容量為1.6 Tbit/s 相同的兩種傳輸模式，我們將探討在不同的調變格式和不同的光纖下，色散以及非線性效應對於傳輸距離和品質的影響。最後成功得到在CSRZ-DPSK調變格式下，傳輸效能品質最好。

關鍵字

摻鉺光纖放大器 ； 色散補償光纖 ； 載波抑制歸零差動相位偏移鍵制

並列摘要

This thesis is to discuss several optical fiber commucation configurations using erbium-doped fiber amplifier (EDFA), various kinds of dispersion compensation fiber (DCF), and optical fibers. Morover, six modulation formats including nonreturn to zero-on off Keying (NRZ-OOK), return to zero-on off keying (RZ-OOK), carrier suppressed return to zero-on off keying (CSRZ-OOK), nonreturn to zero-differential phase shift keying (NRZ-DPSK), return to zero-differential phase shift keying (RZ-DPSK) and carrier suppressed return to zero-differential phase shift keying (CSRZ-DPSK) are applied to 10Gbit/s and 40Gbit/s transmission system for optimization in long-distance DWDM system.
In this thesis, span loss in our proposed system can be simply compensated by using two EDFA as in-line amplifier. 1.6Tbit/s tansmission capacity can realized by 40 × 40Gbit/s and 160 × 10Gbit/s simulation. Most important, we explored how different modulation formats, different optical fiber, dispersion and nonlinear effect can have impacts on transmission distance and quality. After time-consuming optimization, CSRZ-DPSK modulation format has the best transmission quality in high-capaicty DWDM system.

並列關鍵字

EDFA ； DCF ； CSRZ-DPSK

參考文獻

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