单项选择题
A. 0 mW B. 1 mW C. 10 mW D. 1.5 mW
Whatisanadvantageofanexternallymodulatedlaseroveradirec...
单项选择题What is an advantage of an externally modulated laser over a directly modulated laser？ （）
A. lower cost B. higher chirp C. easier to manufacture D. higher dispersion tolerance E. higher optical signal-to-noise ratio
Whatisthephenomenoncalledwheredifferentwavelengthsoflig...
单项选择题What is the phenomenon called where different wavelengths of light travel at different speeds？（）
A. OSNR B. dispersion C. light skew D. attenuation
WhichdevicecreatesanOEOconversion？（）A. amplifierB. atte...
单项选择题Which device creates an OEO conversion？ （）
A. amplifier B. attenuator C. regenerator D. light emitter E. optical switch F. optical receiver G. fiber-optic cable
