A2.5Gb/s(OC-48orSTM-16)opticalsignalwithadispersiontoleranceof1200ps/nmgoesthroughfiberwith18ps/nm*kmofdispersion.Howmany15216-DCU-350equivalentsareneededforenoughcompensationaftertraveling100km?()
题目
A2.5Gb/s(OC-48orSTM-16)opticalsignalwithadispersiontoleranceof1200ps/nmgoesthroughfiberwith18ps/nm*kmofdispersion.Howmany15216-DCU-350equivalentsareneededforenoughcompensationaftertraveling100km?()
A.none
B.one
C.two
D.three
E.four