本論文除了探討利用電吸收調變器完成波長轉換外，還探討光纖雷射於波長轉換應用的相關特性。內容主要包含其物理機制、電吸收調變器特性與波長轉換特性的量測，以及光纖雷射光源穩定度的探討，並利用主動鎖模方式來探討光纖雷射光源之波長轉換。
在實驗上，先是量測改變外加偏壓與幫浦功率對元件特性的影響，再以調變訊號速率為10Gbps進行波長轉換，並探討轉換後所量測的熄滅比、眼形圖以及誤碼率特性，和波長及外加電壓改變對轉換效率及熄滅比、誤碼率、眼形圖的影響。

在使用DFB雷射進行波長轉換後，其誤碼率可達10-12，熄滅比約為4~6dB，轉換效率約為-22dB。而光纖雷射功率較不穩定，但使用光纖雷射當作探針光源或是幫浦光源遭遇困難，主要因為模態太多，且共振基頻一般為5MHz~100MHz，無法調變光源，而我們將該一光纖雷射利用主動式鎖模改善功率不穩的問題，我們發現可以大幅改善波長轉換的效果。

In this thesis, we demonstrate all-optical wavelength conversion using electro-absorption modulator at 10Gbps, and also study the use of fiber laser in wavelength conversion. The topics include its physical mechanism, and the measured characteristics of electro-absorption modulator, and wavelength conversion by EA modulator. Moreover, the effect of the optical power stability of fiber lasers on wavelength conversion is studied. An active-mode locking method is used to lock the modes of fiber laser, in order to increase stability of fiber laser.
In our experiments, measurements were carried out by varying the parameters of EA modulator such as biasing voltage and optical pumping power. Wavelength conversion is accomplished at 10Gbps and the eye diagrams and BER are studied.
The BER is up to 10-12, the ER is 4~6dB, and the efficiency of wavelength conversion is -22dB, when DFB lasers are as light source. Since optical power of fiber lasers is not stable in general, it is difficult to be used as a conversion light source. To study the laser stability, an active mode-locking method is used to lock the lasing mode. A significant improvement in the wavelength conversion is found in our study.

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