单项选择题

If the power is 0 dBm， what is the power in mW？（）

A. 0 mW
B. 1 mW
C. 10 mW
D. 1.5 mW

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单项选择题

A. lower cost
B. higher chirp
C. easier to manufacture
D. higher dispersion tolerance
E. higher optical signal-to-noise ratio

单项选择题

A. OSNR
B. dispersion
C. light skew
D. attenuation

单项选择题

A. amplifier
B. attenuator
C. regenerator
D. light emitter
E. optical switch
F. optical receiver
G. fiber-optic cable