A.0 ps/nm
B.340 ps/nm
C.200 ps/nm
D.3400 ps/nm
E.More information is needed.
第1题:
A.0ps/nm
B.340ps/nm
C.200ps/nm
D.3400ps/nm
E.Moreinformationisneeded.
第2题:
G.652光纤:在1310nm波长处的色散为零;在1550nm窗口中衰耗约为();在1550nm附近的色散系数较大,约为17ps/(nm.km)。
第3题:
光纤的损耗对应1310nm波长为0.20dB/km左右,1550nm波长为0.33dB/km左右。
第4题:
光纤线缆的损耗=光纤线缆长度(km)×(0.50dB/km在1310nm处或0.50dB/km在1550nm处)。
第5题:
G.652光纤色散系数理论值为17ps/nm/km,实际我们通常采用()。
第6题:
The dispersion of a non-zero dispersion shifted fiber is 6 ps/nm*km at 1550 nm and 10 ps/nm*km at 1610 nm. What is the minimum dispersion compensation required if an L-Band DWDM signal travels through 200 km of fiber and has a dispersion tolerance of 1800 ps/nm?()
第7题:
Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?()
第8题:
0 ps/nm
340 ps/nm
200 ps/nm
3400 ps/nm
More information is needed.
第9题:
0 ps/nm
340 ps/nm
200 ps/nm
3400 ps/nm
More information is needed.
第10题:
第11题:
1550nm,1310nm
1310nm,1550nm
1550nm,1550nm
1310nm,1310nm
第12题:
none
-600 ps/nm
-200 ps/nm
+200 ps/nm
+600 ps/nm
第13题:
G652光纤的衰耗及色散指标可选()
第14题:
光网络设计中,1310nm传输损耗为()dB/km;1550nm传输损耗为()dB/km
第15题:
If the dispersion of a given fiber is 17ps/nm*km at 1550 nm and zero at 1310 nm, then what is the accumulated dispersion of an ITU wavelength after it travels 200 km? ()
第16题:
在G.652光纤中传输1550nm窗口的色散系数为()。
第17题:
中继段光纤线路衰减测试标准:1550nm窗口光纤最大衰耗值≤()dB/km,1310nm窗口光纤≤()≤dB/km
第18题:
A 2.5 Gb/s (OC-48 or STM-16) optical signal with a dispersion tolerance of 1200 ps/nm goes through fiber with 18ps/nm*km of dispersion. How many 15216-DCU-350 equivalents are needed for enough compensation after traveling 100 km?()
第19题:
对
错
第20题:
none
-600 ps/nm
-200 ps/nm
+200 ps/nm
+600 ps/nm
第21题:
They are both regions of lowest loss.
They are both regions of low reflections.
They are both regions of low index of refraction.
They are both regions of low chromatic dispersion.
They are both regions of low Polarization Mode Dispersion (PMD).
第22题:
none
one
two
three
four
第23题:
1550nm,1310nm
1310nm,1550nm
1550nm,1550nm
1310nm,1310nm