Signal transmitting method, signal receving method, passive optical network(pon)device and system

Abstract

The embodiment of the invention relates to a signal transmitting method, a signal receiving method, a passive optical network(PON)device and a system. The signal receiving method comprises the steps of receiving a first transmitting signal; wherein, the first transmitting signal comprises a first polarization state optical signal and a second polarization state optical signal vertical to one another, the first polarization state optical signal is loaded with a first data, the first transmitting signal is an uplink signal, and the first data is uplink data; or, the first transmitting signal is a downlink signal, and the first data is downlink data; dividing the first transmitting signal into a first signal and a second signal in accordance with power; rotating a first polarization state optical signal and a second polarization state optical signal of the second signal at 90 degrees respectively; carrying out coherent mixing interference on the rotated second signal and the first signal to obtain the first data. By the embodiment of the invention, terminal devices or lasers and polarization diversity structures on a local end device are saved, the complexities of the device and system are reduced, and the cost is saved. 本发明实施例涉及一种信号发送方法、接收方法、无源光网络PON设备和系统，信号接收方法包括：接收第一发射信号，第一发射信号包括相互垂直的第一偏振态光信号和第二偏振态光信号，第一偏振态光信号上加载有第一数据，第一发射信号为上行信号，第一数据为上行数据，或者，第一发射信号为下行信号，第一数据为下行数据；将第一发射信号按功率分成第一信号和第二信号；将第二信号的第一偏振态光信号和第二偏振态光信号分别旋转90度；将旋转后的第二信号与第一信号进行相干混频，获取第一数据。本发明实施例，节省了终端设备或局端设备上的激光器和偏振分集结构，降低了设备和系统复杂度、节约成本。