参考答案和解析
参考答案:D
更多“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?() ”相关问题
  • 第1题:

    Ifthedispersionofagivenfiberis17ps/nm*kmat1550nmandzeroat1310nm,thenwhatistheaccumulateddispersionofanITUwavelengthafterittravels200km?()

    A.0ps/nm

    B.340ps/nm

    C.200ps/nm

    D.3400ps/nm

    E.Moreinformationisneeded.


    参考答案:D

  • 第2题:

    G.652光纤:在1310nm波长处的色散为零;在1550nm窗口中衰耗约为();在1550nm附近的色散系数较大,约为17ps/(nm.km)。


    正确答案:0.22db/km

  • 第3题:

    光纤的损耗对应1310nm波长为0.20dB/km左右,1550nm波长为0.33dB/km左右。


    正确答案:错误

  • 第4题:

    光纤线缆的损耗=光纤线缆长度(km)×(0.50dB/km在1310nm处或0.50dB/km在1550nm处)。


    正确答案:正确

  • 第5题:

    G.652光纤色散系数理论值为17ps/nm/km,实际我们通常采用()。

    • A、17ps/nm/km
    • B、18ps/nm/km
    • C、20ps/nm/km
    • D、22ps/nm/km

    正确答案:C

  • 第6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

    正确答案:C

  • 第7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).

    正确答案:A

  • 第8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/nm

    B

    340 ps/nm

    C

    200 ps/nm

    D

    3400 ps/nm

    E

    More information is needed.


    正确答案: E
    解析: 暂无解析

  • 第9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/nm

    B

     340 ps/nm

    C

     200 ps/nm

    D

     3400 ps/nm

    E

     More information is needed.


    正确答案: A
    解析: 暂无解析

  • 第10题:

    填空题
    中继段光纤线路衰减测试标准:1550nm窗口光纤最大衰耗值≤()dB/km,1310nm窗口光纤≤()≤dB/km

    正确答案: 0.22;0.36
    解析: 暂无解析

  • 第11题:

    单选题
    近端机接收和发射光波长分别为()。
    A

    1550nm,1310nm

    B

    1310nm,1550nm

    C

    1550nm,1550nm

    D

    1310nm,1310nm


    正确答案: D
    解析: 暂无解析

  • 第12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

    none

    B

    -600 ps/nm

    C

    -200 ps/nm

    D

    +200 ps/nm

    E

    +600 ps/nm


    正确答案: E
    解析: 暂无解析

  • 第13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)

    正确答案:A

  • 第14题:

    光网络设计中,1310nm传输损耗为()dB/km;1550nm传输损耗为()dB/km


    正确答案:0.4;0.25

  • 第15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.

    正确答案:D

  • 第16题:

    在G.652光纤中传输1550nm窗口的色散系数为()。

    • A、17ps/(nm.km)
    • B、10ps/(nm.km)
    • C、7ps/(nm.km)

    正确答案:A

  • 第17题:

    中继段光纤线路衰减测试标准:1550nm窗口光纤最大衰耗值≤()dB/km,1310nm窗口光纤≤()≤dB/km


    正确答案: 0.22;0.36

  • 第18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

    正确答案:C

  • 第19题:

    判断题
    光纤线缆的损耗=光纤线缆长度(km)×(0.50dB/km在1310nm处或0.50dB/km在1550nm处)。
    A

    B


    正确答案:
    解析: 暂无解析

  • 第20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

     none

    B

     -600 ps/nm

    C

     -200 ps/nm

    D

     +200 ps/nm

    E

     +600 ps/nm


    正确答案: A
    解析: 暂无解析

  • 第21题:

    单选题
    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).


    正确答案: E
    解析: 暂无解析

  • 第22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

     none

    B

     one

    C

     two

    D

     three

    E

     four


    正确答案: B
    解析: 暂无解析

  • 第23题:

    单选题
    远端机接收和发射光波长分别为()。
    A

    1550nm,1310nm

    B

    1310nm,1550nm

    C

    1550nm,1550nm

    D

    1310nm,1310nm


    正确答案: C
    解析: 暂无解析