Since the uplink/downlink wavelengths are different from GPON, XGS-PON adopts the Combo solution to share ODN with GPON. The Combo optical module of XGS-PON integrates GPON optical module, XGS-PON optical module and WDM c. Since the uplink/downlink wavelengths are different from GPON, XGS-PON adopts the Combo solution to share ODN with GPON. The Combo optical module of XGS-PON integrates GPON optical module, XGS-PON optical module and WDM combiner. In the upstream direction, after the optical signal enters the XGS-PON Combo port, the WDM filters the GPON signal and t. GPON is the access technology of passive optical network (PON) based on ITU-T G.984.x standard. It's considered as the ideal solution to FTTx(especially FTTH) with its high bandwidth, great interoperability and manageability, high efficiency, etc, which gains more and more ISPs' favor. However, with the flourishing of PON and demand for full servic. Like XG-PON, the downlink of XGS-PON adopts broadcast mode, and the uplink adopts TDMA mode. Since the downlink wavelength and downlink rate of XGS-PON and XG-PON are the same, the downlink of XGS-PON does not distinguish between XGS-PON ONU and XG-PON ONU, and the optical splitter broadcasts the downlink optical signal to the same ODN link For eac.
