Patent ID: 9647791
Date: 2017-05-09
CPC Classifications: H04B,H04J

Claim:
1. A wavelength configuration method for a multi-wavelength passive optical network (PON), the method comprising: scanning, by an optical network unit (ONU), a downstream receiving wavelength, and receiving, during the process of scanning the downstream receiving wavelength, downstream wavelength information of each downstream wavelength channel that is broadcast by an optical line terminal (OLT) separately through each downstream wavelength channel of a multi-wavelength PON system; establishing, by the ONU, a downstream receiving wavelength mapping table according to the downstream wavelength information, wherein an entry of the downstream receiving wavelength mapping table comprises downstream receiving wavelength information, drive current information of a downstream optical receiver, and a receiving optical physical parameter of the ONU; wherein establishing, by the ONU, a downstream receiving wavelength mapping table, comprises: detecting, by the ONU, a receiving optical current of the ONU, or receiving optical power of the ONU, or a received signal strength indication RSSI during the process of scanning the downstream receiving wavelength, and searching for a peak value of the receiving optical current of the ONU, or a peak value of the receiving optical power of the ONU, or an RSSI peak value; and when the peak value of the receiving optical current of the ONU, or the peak value of the receiving optical power of the ONU, or the RSSI peak value is searched out, recording, by the ONU, a current drive current of the downstream optical receiver and downstream wavelength information of a downstream wavelength channel corresponding to the peak value of the receiving optical current of the ONU, or the peak value of the receiving optical power of the ONU, or the RSSI peak value, and establishing a downstream receiving wavelength mapping entry according to the foregoing three parameters; and selecting, by the ONU, one downstream wavelength from the downstream wavelength information broadcast by the OLT, and setting, according to the drive current information of the downstream optical receiver recorded in a related entry of the downstream receiving wavelength mapping table, an operating wavelength of the downstream optical receiver to the selected downstream wavelength.