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单选题
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？（）
A
none
B
one
C
two
D
three
E
four
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更多 “单选题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？（）A noneB oneC twoD threeE four” 相关考题
考题
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. noneB. -600 ps/nmC. -200 ps/nmD. +200 ps/nmE. +600 ps/nm
考题
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/nmB.340 ps/nmC.200 ps/nmD.3400 ps/nmE.More information is needed.
考题
What are three factors that limit the maximum distance of an amplified optical signal without regeneration? ()(Choose three.)
A. fiber dispersionB. signal attenuationC. transmitter powerD. amplifier bandwidthE. receiver dispersion tolerance
考题
A2.5Gb／s(OC－48orSTM－16)opticalsignalwithadispersiontoleranceof1200ps／nmgoesthroughfiberwith18ps／nm*kmofdispersion.Howmany15216－DCU－350equivalentsareneededforenoughcompensationaftertraveling100km?()
A.noneB.oneC.twoD.threeE.four
考题
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?（）A.noneB.oneC.twoD.threeE.four
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After an IOPP Certificate is issued to an inspected vessel，how many other surveys of the vessel's pollution prevention equipment are conducted during the period of validity of the certificate?A.NoneB.OneC.TwoD.Three
考题
What are three factors that limit the maximum distance of an amplified optical signal without regeneration? （）(Choose three.)A、fiber dispersionB、signal attenuationC、transmitter powerD、amplifier bandwidthE、receiver dispersion tolerance
考题
G652光纤的衰耗及色散指标可选（）A、1310nm窗口衰耗为0.33dB/km、色散为零，1550nm窗口衰耗为0.19dB/km、色散为17ps/（nm•km）B、1310nm窗口衰耗为0.19dB/km、色散为17ps/（nm•km），1550nm窗口衰耗为0.19dB/km、色散为零C、1310nm窗口衰耗为0.33dB/km、色散为零，1550nm窗口衰耗为0.33dB/km、色散为17ps/（nm•km）D、1310nm窗口衰耗为0.19dB/km、色散为17ps/（nm•km），1550nm窗口衰耗为0.33dB/km、色散为17ps/（nm•km）
考题
单模光纤在信号波长处的材料色散和波导色散分别为20ps/（nm.km）和-15ps/（nm.km），则光纤总色散为（）A、35ps/（nm.km）B、25ps/（nm.km）C、5ps/（nm.km）D、0ps/（nm.km）
考题
What are three factors that limit the maximum distance of an amplified optical signal without regeneration？ （）A、 fiber dispersionB、 signal attenuationC、 transmitter powerD、 amplifier bandwidthE、 receiver dispersion tolerance
考题
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/nmB、 340 ps/nmC、 200 ps/nmD、 3400 ps/nmE、 More information is needed.
考题
G652光纤零散波长在1288-1339nm范围时，最大色散系数应不大于（）A、2.5ps/（nm.km）B、3ps/（nm.km）C、3.5ps/（nm.km）D、4ps/（nm.km）
考题
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、noneB、-600 ps/nmC、-200 ps/nmD、+200 ps/nmE、+600 ps/nm
考题
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?（）A、noneB、oneC、twoD、threeE、four
考题
Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?（）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).
考题
单选题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?（）A
noneB
oneC
twoD
threeE
four
考题
单选题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
noneB
-600 ps/nmC
-200 ps/nmD
+200 ps/nmE
+600 ps/nm
考题
单选题单模光纤在信号波长处的材料色散和波导色散分别为20ps/（nm.km）和-15ps/（nm.km），则光纤总色散为（）A
35ps/（nm.km）B
25ps/（nm.km）C
5ps/（nm.km）D
0ps/（nm.km）
考题
单选题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
noneB
-600 ps/nmC
-200 ps/nmD
+200 ps/nmE
+600 ps/nm
考题
单选题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/nmB
340 ps/nmC
200 ps/nmD
3400 ps/nmE
More information is needed.
考题
单选题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/nmB
340 ps/nmC
200 ps/nmD
3400 ps/nmE
More information is needed.
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