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Spektrum Zayıflama Eğrisi

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Spektrum Zayıflama Egrisi

Farklı dalga boylarına, farklı zayıflama değerleri etki etmektedir.  850/1310/1550nm dalga boylarına genellikle "Birinci/ İkinci/Üçüncü Pencere" olarak adlandırılır;

1380 nm civarındaki zayıflama, hidroksil iyonları tarafından absorpsiyon nedeniyle keskin bir şekilde artar. Buna "su zirvesi" denir.

 ITU-T, 1260nm'den daha yüksek olan fiber bandını OESCLU bandı olarak böler;

Görüldüğü gibi C bandında ve L bandında zayıflama en düşüktür. Bu nedenle DWDM sistemleri için L(1565-1625nm) bandı tercih edilmektedir.


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