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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相关考题
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单项选择题
Whatisanadvantageofanexternallymodulatedlaseroveradirectlymodulatedlaser？（）
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
Whatisthephenomenoncalledwheredifferentwavelengthsoflighttravelatdifferentspeeds？（）
A. OSNR
B. dispersion
C. light skew
D. attenuation -
单项选择题
WhichdevicecreatesanOEOconversion？（）
A. amplifier
B. attenuator
C. regenerator
D. light emitter
E. optical switch
F. optical receiver
G. fiber-optic cable
