色散補償光纖高拉曼增益利用RZ-DPSK架構於超長距離高密度分波多工傳輸系統之研究與設計

The Research and Design of the High Raman Gain of DCF for RZ-DPSK Long-Haul Distance DWDM Transmission System

曾世輝(Shih-Hui Tseng)

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(2009年)

https://doi.org/10.6841/NTUT.2009.00273

摘要

本論文是利用拉曼放大器搭配單模光纖與色散補償光纖，所組合的光通信架構配置，並分析非歸零開關鍵制(Nonreturn to Zero-On Off Keying；NRZ-OOK)、歸零開關鍵制(Return to Zero-On Off Keying；RZ-OOK)、非歸零差動相位偏移鍵制(Nonreturn to Zero-Differential Phase Shift Keying；NRZ-DPSK)與歸零差動相位偏移鍵制(Return to Zero-Differential Phase Shift Keying；RZ-DPSK)等四種調變，應用於16×10 Gbps傳輸速度保持長距離高密度分波多工系統傳輸之效益。
　　在本模擬實驗中，將使用一個摻鉺光纖放大器作為功率放大器，以提高光功率來進行傳輸，並利用色散補償光纖的高拉曼增益特性，達到超長距離傳輸的目標，藉以比較四種調變格式的結果。在本論文架構中使用C band頻帶的16個通道，其每個通道傳輸10 Gbps，而通道間距為0.4 nm，並探討了受激拉曼散射(Stimulated Raman Scattering；SRS)和自相位調變(Self Phase Modulation；SPM)等非線性效應，在接收器中使用前向糾錯法(Forward Error Correction；FEC)測得高密度分波多工系統的誤碼率(小於10-9)達到國際電信聯盟電信標準化部門(Telecommunication Standardization Sector of the International Telecommunications Union；ITU-T)之規範，最後成功得將歸零差動相位偏移鍵制調變格式的傳輸距離達到1800 km。

關鍵字

拉曼放大器 ； 單模光纖 ； 色散補償光纖 ； 歸零差動相位偏移鍵制

並列摘要

This thesis is to discuss how to use the Raman characteristics of DCF to construct a Raman amplifier, and combine SMF with DCF of the optical device. Four formats of NRZ-OOK, RZ-OOK, NRZ-DPSK and RZ-DPSK are analyzed in the 16×10 Gbps long-distance transmission of DWDM transmission system structure.
In this thesis, an erbium-doped fiber amplifier is used as a power amplifier for increasing optical power before the fiber span, and the Raman gain characteristics of dispersion compensation fiber is used in the ultra-long haul DWDM system. Therefore, the results of the four modulation formats are compared.
In the structure of transmission, when 16 channels with 0.4 nm channel space are used in the C band, the each channel of bit rate is 10 Gbps, and the system includes the SRS, SPM, and other nonlinear effects. At the receiver, FEC is applied to measure the result of BER(less than 10-9) of ITU-T specification in the DWDM system. Finally, after comparing the results of four modulation formats transmitted in the structure, it shows that the transmission distance of RZ-DPSK can reach 1800 km.

並列關鍵字

Dispersion Compensation Fiber (DCF) ； Raman amplifier (RA) ； Return to Zero-Differential Phase Shift Keying (RZ-DPSK) ； Single Mode Fiber (SMF)

參考文獻

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