System and Method for Optical Receiver

摘要

A receiver is provided, including a signal acquiring unit, a signal diversity unit that is connected to the signal acquiring unit, a signal combination unit that is connected to the signal diversity unit, and a digital-signal acquiring unit that is connected to the signal combination unit. The receiver can receive a dual-polarization signal and can eliminate SSBI from the dual-polarization signal.

主权项

1. A receiver, comprising:
an optical signal acquisition unit, configured to:
receive a dual-polarization signal;receive a local oscillation;perform polarization beam splitting processing on the dual-polarization signal to obtain signals of the dual-polarization signal in an X polarization direction and a Y polarization direction;perform polarization beam splitting processing on the local oscillation, separately, to obtain signals of the local oscillation in an X polarization direction and a Y polarization direction; an optical signal diversity unit connected to the optical signal acquisition unit, wherein the optical signal diversity unit is configured to:
perform coupling processing on the signal of the dual-polarization signal in the X polarization direction;perform coupling processing on the signal of the local oscillation in the X polarization direction;obtain X polarized coupled signals with different phase shifts in the X polarization direction in accordance with the coupling processed dual-polarization signal in the X polarization direction and the coupling processed local oscillation in the X polarization direction;perform coupling processing on the signal of the dual-polarization signal in the Y polarization direction;perform coupling processing on the signal of the local oscillation in the Y polarization direction; andobtain Y polarized coupled signals with different phase shifts in the Y polarization direction in accordance with the coupling processed dual-polarization signal in the Y polarization direction and the coupling processed local oscillation in the Y polarization direction; a signal combination unit connected to the optical signal diversity unit, wherein the signal combination unit is configured to:
perform signal combination on a group of one coupled signal in the X polarization direction and one coupled signal in the Y polarization direction, to obtain a combined signal; andconvert the combined signal to an electrical signal; and a digital-signal acquisition unit connected to the signal combination unit, wherein the digital-signal acquisition unit is configured to:
receive electrical signals; andgenerate a digital signal of an electrical signal of the dual-polarization signal in the X polarization direction and a digital signal of an electrical signal of the dual-polarization signal in the Y polarization direction according to the electrical signals.