Dispersion—Shifted Optical Fiber意为（）。..

第1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

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第2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

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第3题

[单选题] PMD全称为（）。

A、polar mode dispersion B、polarization mode dispersion C、polarization maintaining dispersion D、polarized mode dispersive

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第4题

[多选题] Which three technologies are used to reduce chromatic dispersion accumulation in fiber-optic transmission systems? （）(Choose three.)

A、PIN photodiodes B、zero-chirped lasers C、Erbium-doped fiber amplifiers D、dispersion compensating fiber E、dispersion compensating Bragg grating

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第5题

[多选题] Which three technologies are used to reduce chromatic dispersion accumulation in fiber-optic transmission systems？（）

A、 PIN photodiodes B、 zero-chirped lasers C、 Erbium-doped fiber amplifiers D、 dispersion compensating fiber E、 dispersion compensating Bragg grating

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第6题

[多选题] What are three factors that limit the maximum distance of an amplified optical signal without regeneration? （）(Choose three.)

A、fiber dispersion B、signal attenuation C、transmitter power D、amplifier bandwidth E、receiver dispersion tolerance

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第7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

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第8题

[多选题] What are three factors that limit the maximum distance of an amplified optical signal without regeneration？（）

A、 fiber dispersion B、 signal attenuation C、 transmitter power D、 amplifier bandwidth E、 receiver dispersion tolerance

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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.

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Dispersion—Shifted Optical Fiber意为（）。

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