试题详情
- 单项选择题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？ （）
A、 0 ps/nm
B、 340 ps/nm
C、 200 ps/nm
D、 3400 ps/nm
E、 More information is needed.
- D
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