A. They are both regions of lowest loss.
B. They are both regions of low reflections.
C. They are both regions of low index of refraction.
D. They are both regions of low chromatic dispersion.
E. They are both regions of low Polarization Mode Dispersion (PMD).
第1题:
第2题:
SDH传输系统的工作波长是()。
第3题:
PON下行波长为()nm。
第4题:
1550波长测试距离更远,1550nm比 1310nm光纤对弯曲更敏感,1550nm比1310nm单位长度衰减更小、1310nm比1550nm测的熔接或连接器损耗更高。
第5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6题:
光功率计的波长范围()
第7题:
0 ps/nm
340 ps/nm
200 ps/nm
3400 ps/nm
More information is needed.
第8题:
1200nm
1250nm
1300nm
1310nm
第9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10题:
1310
1300
1490
1550
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:
第14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15题:
光纤的最低损耗点在波长()地方,最小色散点在波长()地方。
第16题:
写出下列波长对应的频率: (a)850nm (b)1300nm (c)1550nm
第17题:
Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?()
第18题:
第19题:
none
-600 ps/nm
-200 ps/nm
+200 ps/nm
+600 ps/nm
第20题:
0 ps/nm
340 ps/nm
200 ps/nm
3400 ps/nm
More information is needed.
第21题:
1490nm、1550nm、1310nm
1310nm、1490nm、1550nm
1550nm、1490nm、1310nm
1550nm、1310nm、1490nm
第22题:
850nm
1300nm
1310nm
1550nm
第23题:
1550nm,1310nm
1310nm,1550nm
1550nm,1550nm
1310nm,1310nm