近年來，由於網路越來越普及，訊號的傳輸速度與容量需求也越來越大，而分波多工可有效地使光通訊的頻寬大大提升。然而在光通訊的網路中，光電的轉換是不被期待的，這是由於電的模式下，訊號的速度會受到限制，因此全光式網路為下世代通訊的目標。在通訊網路上，訊號從一節點傳到另一節點，訊號上必頇含有位址的訊息，而光網路上含有位址訊息的訊號稱為標籤。當網路塞車或是網路不通時，需要換條路徑通行時，此時就需要將標籤做改變，為了達到速度與容量的要求，全光式標籤交換是必需的。 在本論文中，提出兩種標籤抹除的架構（迴圈式、與直線式），此兩架構皆為全光式標籤交換。在迴圈式的架構中，主要是使用迴圈的方式來疊加訊號，再加以放大後達到抹除功能。迴圈中，有兩個主要的元件：光放大器與光濾波器，光放大器的部分選用半導體光放大器，利用其高飽和與高通濾波特性來將訊號抹除並降低雜訊、光濾波器的部分則使用飽和吸收器（其中心頻率是由通過內部最大光強度的頻率來決定）。在直線式的架構中，則是利用摻鉺光纖放大器將訊號放大到半導體光放大器的飽和區，利用半導體光放大器的高飽和特性將訊號抹除，並利用半導體光放大器具有雙折射與非線性效應的特性，與使用偏振片將所需的偏振態濾出，達到抹除優化的功能。在標籤編碼的部分，選用了光載波抑制與分開的機制，封包與標籤皆使用開關式調變(封包位元率為10Gb/s、標籤位元率為1.25 Gb/s)。在上述的條件下，進行標籤交換，並測量誤碼率判別訊號品質。

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