OPTICAL TRANSCEIVER AND SIGNAL PROCESSING METHOD FOR OPTICAL TRANSCEIVER

摘要

An optical transceiver converts a received optical signal to an electric signal and converts the electric signal to a digital signal, and has an adaptive equalizer to adaptively equalize the digital signal, a synchronization part to synchronize a first polarized wave and a second polarized wave contained in the adaptively equalized digital signal and having polarization axes perpendicular to each other, and a symbol offset determination part to determine an amount of symbol offset between the first polarized wave and the second polarized wave based upon symbol synchronization information of the first polarized wave and the second polarized wave supplied from the synchronization part, the symbol offset determination part being configured to repeat determination of the amount of symbol offset and restart the adaptive equalizer until the symbol offset is minimized.

主权项

1. An optical transceiver comprising:
a receiving frontend to receive an optical signal and output an electric signal; a converter to convert the electric signal to a digital signal; an adaptive equalizer to adaptively equalize the digital signal; a synchronization part to synchronize a first polarized wave and a second polarized wave contained in the adaptively equalized digital signal with each other, polarization axes of the first polarized wave and the second polarized wave being perpendicular to each other; and a symbol offset determination part to determine an amount of symbol offset between the first polarized wave and the second polarized wave based upon symbol synchronization information of the first polarized wave and the second polarized wave supplied from the synchronization part, the symbol offset determination part being configured to repeat determination of the amount of the symbol offset and output a restart-up instruction to the adaptive equalizer until the symbol offset is minimized.