单项选择题
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？（）
A. none
B. -600 ps/nm
C. -200 ps/nm
D. +200 ps/nm
E. +600 ps/nm
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相关考题
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Forlaserswithtightlycontrolledwavelengths，approximatelyhowfarapartarethecentersofadjacentwavelengthswhen100GHzspacingisusedinaDWDMsystem？（）
A. 0.4 nanometers
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D. 1.2 nanometers
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多项选择题
Click the Exhibit button. Within an ONS 15454， you are provisioning a circuit on an unprotected SNCP ring. In the exhibit， which two must you configure？（）
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