光載波供給元件技術應用於高密度分波多工傳輸系統之研究與設計

本論文是使用光載波供給元件(Optical Carrier Supply Module；OCSM)技術，以減少雷射為目的來產生出多個通道，在實驗中是以8個雷射當作為發射光源，經過OCSM後會產生出70個通道來使用，其通道間距為0.4nm，使信號功率平坦度在±1dB內，分別傳輸在單模光纖(Single Mode Fiber；SMF))與非零色散位移光纖(Nonzero Dispersion-shifted Fiber；NZDSF)再分別搭配到色散補償光纖(Dispersion Compensation Fiber；DCF)與反向色散光纖(Reverse Dispersion Fiber；RDF)共搭配出四種方式。接著比較非歸零碼(Nonreturn to Zero；NRZ)、歸零碼(Return to Zero；RZ)、載波抑制歸零碼(Carrier Suppressed Return to Zero；CSRZ)共有三種調變方式之傳輸效能，以20Gbit/s傳輸於C-band，並且探討誤碼率(Bit Error Ratio；BER)在10-9以下即Q值大於6的最長傳輸距離來做分析，其中在CSRZ調變以非零色散位移光纖搭配反向色散光纖的傳輸系統可以傳輸的比較遠，而此傳輸距離可以達到1111km。本論文研究光載波供給元件為基礎的高密度分波多工系統，在光通訊中的發展中需要求低通道間距的傳輸和高傳輸速率，而本論文的技術可以降低系統成本，並可降低系統的複雜度。

關鍵字

光載波供給元件；單模光纖；非零色散位移光纖；色散補償光纖；反向色散光纖

並列摘要

In this thesis, we produced five optical carriers in one wavelength expanding by using OCSM. With the purpose of reducing laser to produce multiple channels, eight lasers are used as emission light source in the experiment, then 70 channels are produced using OCSM, and the channel spacing is 0.4nm, so that the flatness of signal power is with in ±1 dB, then we used four structures for transmission, which are SMF combined with DCF, SMF combined with RDF, NZDSF combined with DCF and NZDSF combined with RDF. And we also used RZ, NRZ and CSRZ codes for 20Gbit/s system. And we investigated BER below 10-9, and the maximum transmitting distance is analyzed with Q factor greater than 6. Under which the combination of NZDSF and RDF transmission system with the CSRZ modulation has the longest transmission distant, which can be up to 1111km. In this thesis, we designed and researched the Super-DWDM system based on OCSM technology. The optical communication development requires narrow channel spacing and high bit rate. The technology proposed in this thesis can reduce the system cost as well as the system complexity.

並列關鍵字

OCSM ； SMF ； NZDSF ； DCF ； RDF

參考文獻

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光載波供給元件技術應用於高密度分波多工傳輸系統之研究與設計

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