The technology of using local oscillator lasers of the same frequency to interfere with the received optical signal, and recovering the amplitude, phase and polarization state information from the received signal is called coherent receiving technology.

The technology of using local oscillator lasers of the same frequency to interfere with the received optical signal, and recovering the amplitude, phase and polarization state information from the received signal is called coherent receiving technology.
A . True
B. False

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Answer: A