近年來，用全光學的方式來作光信號的再放大器和波形重建已漸漸受到重視。傳統上當光訊號傳輸了一段距離的之後，除了本身信號衰減外，也會加入雜訊與色散的影響。而在2004年一篇利用Fabry-Perot雷射二極體作10 Gb/s信號的再放大與波形重建，主要是利用two-mode injection-locking的機制來達成，但此機制需要利用一個額外的可調波長雷射來壓制因信號作切換時所造成的阻尼現象。
而在此篇論文中，我們提出了另一種新的架構來代替這一個額外的可調波長雷射。其工作方式主要是將fiber Bragg grating (FBG) 封裝在Fabry-Perot雷射二極體的輸出端，這樣便可以利用自注入(self-seeding)的方式產生雷射信號以代替原本額外的可調波長雷射。而在我的論文中，一開始先探討傳統上利用two-mode injection-locking的機制作10 Gb/s信號的再放大與波形重建有什麼優缺點，也實際地重建出實驗架構。接著將已失真的1.25 Gb/s和2.5 Gb/s信號傳入我們的實驗架構中，藉由在接收端觀察眼圖 (eye-diagram)的變化以判斷波形重建的效果好壞。同樣地，在討論利用自注入(self-seeding)的方式作波形重建時，由於我們的訴求是將可調波長雷射給取代掉，所以必須注意的事是原本可調式波長雷射是持續性的輸出光源，所以在利用fiber Bragg grating (FBG)時，必須要很注意地調整反射率。而為了達到高速的10 Gb/s信號波形重建，在封裝光纖光柵時與雷射二極體間的距離也希望能盡量變短(1cm)。最後也成功地將傳輸了100公里單模光纖的10 Gb/s信號作波形重建，所造成的功率代價(Power Penalty)可以壓制在3 dB以內，與原本未補償前的9 dB作比較，的確改善了很多。所以利用自注入的機制來作波形重建是可行的。

In recent paper of all-optical regeneration, they usually used two side-modes injection-locked the Fabry-Perot laser diode and the use of the continuous-wave (CW) probe light suppresses the carrier-induced relaxation oscillation, and high-speed operation is expected. We have proposed and demonstrated all-optical 2R regeneration using a self-seeding injection-locked FP-LD. The original CW probe light was substituted by a self-seeding signal which was produced by a fiber bragg grating packaged in the Fabry-Perot laser diode. We have successfully performed the 10 Gb/s PRBS data 100-km transmission with regeneration at 50 km. From the bit-error rate diagram, the power penalty of 100-km transmission is 3 dB for the self-seeding mechanism and 3.7 dB for the two side-mode injection mechanism.

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