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試題內(nèi)容

In order to maintain the reach of a typical 100G WAN transport system(~1500 km),several system improvements have to be made to recover the lost(1),including the use of low-loss low-nonlinearity(2),Raman amplification,and stronger error correction.
(1)
A.noise   
B.SNR   
C.speed   
D. eeor
(2)
A.optical fiber   
B.traffic   
C.internet   
D.signaling


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