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單項(xiàng)選擇題

Click the Exhibit button.
Which type of multiplexer is shown in the exhibit？（）

A. Thin Film filter
B. Fiber Bragg Grating
C. Arrayed Wave Guide
D. Erbium fiber amplifier

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多項(xiàng)選擇題

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

單項(xiàng)選擇題

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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