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
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
相关考题：
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.
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
A2.5Gb／s(OC－48orSTM－16)opticalsignalwithadispersiontoleranceof1200ps／nmgoesthroughfiberwith18ps／nm*kmofdispersion.Howmany15216－DCU－350equivalentsareneededforenoughcompensationaftertraveling100km?() A.noneB.oneC.twoD.threeE.four
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).
What is an advantage of an externally modulated laser over a directly modulated laser?() A. lower costB. higher chirpC. easier to manufactureD. higher dispersion toleranceE. higher optical signal-to-noise ratio
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
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
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.
In the OSNR model for EDFA amplifiers, SNR OUT = 1/(1/SNR IN + FhvB/P IN ), what does SNR IN represent?（）A、the signal to noise of the current optical amplifierB、the signal to noise of the previous amplifier or sourceC、the signal to noise introduced by the optical multiplexerD、the accumulated noise to signal ratio of the optical channel
What is an advantage of an externally modulated laser over a directly modulated laser?（）A、lower costB、higher chirpC、easier to manufactureD、higher dispersion toleranceE、higher optical signal-to-noise ratio
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
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
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).
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?（）A0 ps/nmB340 ps/nmC200 ps/nmD3400 ps/nmEMore information is needed.
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
单选题What is an advantage of an externally modulated laser over a directly modulated laser?（）Alower costBhigher chirpCeasier to manufactureDhigher dispersion toleranceEhigher optical signal-to-noise ratio
单选题In the OSNR model for EDFA amplifiers， SNR OUT = 1/（1/SNR IN + FhvB/P IN ）， what does SNR IN represent？（）A the signal to noise of the current optical amplifierB the signal to noise of the previous amplifier or sourceC the signal to noise introduced by the optical multiplexerD the accumulated noise to signal ratio of the optical channel
多选题What are three factors that limit the maximum distance of an amplified optical signal without regeneration？ （）Afiber dispersionBsignal attenuationCtransmitter powerDamplifier bandwidthEreceiver dispersion tolerance
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.
单选题Why are the 1300 nm and 1550 nm regions of the fiber spectrum primarily used for optical communications?（）AThey are both regions of lowest loss.BThey are both regions of low reflections.CThey are both regions of low index of refraction.DThey are both regions of low chromatic dispersion.EThey are both regions of low Polarization Mode Dispersion (PMD).
多选题What are three factors that limit the maximum distance of an amplified optical signal without regeneration? （）(Choose three.)Afiber dispersionBsignal attenuationCtransmitter powerDamplifier bandwidthEreceiver dispersion tolerance
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
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?（）AnoneB-600 ps/nmC-200 ps/nmD+200 ps/nmE+600 ps/nm
单选题What is an advantage of an externally modulated laser over a directly modulated laser？ （）A lower costB higher chirpC easier to manufactureD higher dispersion toleranceE higher optical signal-to-noise ratio
单选题STM-16数码率是（）。A155Mb/sB622Mb/sC2.5Gb/sD10Gb/s