Signal transmission method, signal receiving method, passive optical network PON device, and PON system

摘要

Embodiments of the present disclosure relate to a signal transmission method The signal receiving method includes: receiving a first transmit signal, where the first transmit signal includes a first polarized optical signal and a second polarized optical signal that are perpendicular to each other, where the first polarized optical signal is loaded with first data, the first transmit signal is an uplink signal, and the first data is uplink data, or, the first transmit signal is a downlink signal, and the first data is downlink data; splitting the first transmit signal into a first signal and a second signal according to power; separately rotating a first polarized optical signal and a second polarized optical signal of the second signal by 90 degrees; and performing coherent mixing on the rotated second signal and the first signal to obtain the first data.

主权项

1. A receiver, comprising a first power splitter, a first director of a first optical signal, a polarization rotator of light, and a coherent receiver, wherein
the first power splitter splits a first transmit signal sent by a transmitting end into a first signal and a second signal according to power, inputs the first signal to the coherent receiver, and inputs the second signal to the first director of the first optical signal, wherein the first transmit signal comprises a first polarized optical signal and a second polarized optical signal having polarizations that are perpendicular to each other, wherein the first polarized optical signal is loaded with first data; the first director of the first optical signal is connected to the polarization rotator of light, and the first director of the first optical signal is configured to input the second signal to the polarization rotator of light; the polarization rotator of light separately rotates a first polarized optical signal and a second polarized optical signal of the second signal by 90 degrees, and inputs the rotated second signal to the first director of the first optical signal; and the first director of the first optical signal inputs the rotated second signal to the coherent receiver; and the coherent receiver performs coherent mixing on the rotated second signal and the first signal to obtain the first data.