OPTICAL COMMUNICATION DEVICE AND OPTICAL COMMUNICATION METHOD

摘要

A PD (110) receives the optical signal sent from an optical transmitter. A preamble detector section (144) detects a preamble signal contained in the signal received by the PD (110). An intensity ratio calculation section (146) calculates the dispersion quantity of the preamble signal in accordance with the waveform of the preamble signal detected by the preamble detector section (144). An electrical dispersion compensator (150) performs dispersion compensation to the signal received by the PD (110) depending on the dispersion quantity calculated by the intensity ratio calculation section (146).