FIBER LINK MONITORING SCHEME IN BIDIRECTIONAL WDM-PON USING ASE-INJECTED FP-LD

摘要

The present invention relates a high-density wavelength-division-multiplexed passive optical network system, in particular using the periodicity of the AWG, and place the reflector in each ONU, the present invention relates to an apparatus for monitoring the optical line remotely. When using a conventional FBG, because each ONU each using a FBG for the specific wavelength, but the interchangeability between the ONU, so the present invention is used for the reflector independent of the wavelength assigned to each channel, there is between the ONU compatible system It can install easily and significantly reduce the number of ONU for maintenance. In addition, there is no interference by using a light source of the transmission signal and the other band, ONU is powered off, there is an advantage that the line failure can be detected even when no optical signal.