In this case the information source provides an electrical signal to a transmitter comprising an electrical stage which drives an optical source to give modulation of the lightwave carrier.
在这种情况下，信源给发射机提供一个电信号，发射机中的电路驱动光源以实现对光载波的调制。
In this case the information source provides an electrical signal to a transmitter comprising an electrical stage which drives an optical source to give modulation of the lightwave carrier.
在这种情况下，信源给发射机提供一个电信号，发射机中的电路驱动光源以实现对光载波的调制。
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