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[单选题]
G.652光纤在()波长上具有零色散的特点。
A.850nm
B.1310nm
C.1550nm
D.1510nm
查看答案
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A.850nm
B.1310nm
C.1550nm
D.1510nm
石英光纤材料的零色散系数波长在()nm附近。
A.127
B.1270
C.227
D.2270
A.G.655光纤色散每公里为20ps/(nm.km)
B.G.652光纤色散每公里为6ps/(nm.km)
C.G.655光纤色散每公里为6ps/(nm.km)
D.G.652光纤色散每公里为20ps/(nm.km)
A.25km
B.30km
C.40km
D.50km
A.相同
B.不同