Protection scheme of fiber to the home passive optical network using access control system

This paper proposes and experimentally demonstrates an access control system (ACS) mechanism against distribution fiber fault in fiber to the home (FTTH) passive optical network (PON). ACS will be installed between with optical line terminal (OLT) at the central office (CO) to monitor and control each optical fiber line's status and detect the failure that occurs in the drop region of PON downstream from CO to the optical network unit (ONU). The technique is based on the remote host of optical switch, and the web-server would help discern an individual event during the monitoring of the FTTH PON in collaboration with the information provided by the optical switch. The FTTH-PON architecture can be analyzed by the monitoring method by using the OTDR at the central office (CO) under the in-service state of FTTH-PON. Moreover, the downstream traffic performance has also been measured and discussed in PON architecture.