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Optical Line Monitoring System using Optical Fiber Closure

This paper examines an optical fiber closure and optical line monitoring system. Currently available optical fiber closures do not support centralized real-time control of their on/off status when opening business to business (B2B) and business to company (B2C) lines. This problem can be addressed by a range of methods such as real-time optical line monitoring, optical line failure alerts followed by immediate search of the failure location, an optical fiber closure open/closed state monitoring and alert system, and a periodic optical line status inspection system. This paper investigates a monitoring system in which a connector and a tray are installed inside an optical fiber closure to enable the operator to turn it off to block optical signals so that the central office can detect faults in real time through an optical time-domain reflectometer (OTDR) and issue an alert. This study is expected to contribute to network quality stabilization by enabling a rapid and efficient optical line management.