WAVELENGHT DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK SYSTEM ADOPTED DUAL CENTRAL OFFICE

摘要

Disclosed herein is a Wavelength Division Multiplexing (WDM) Passive Optical Network (PON) system having a dual central office. The WDM PON system is configured to guarantee system stability by employing a plurality of central offices on a ring type optical communication line and allowing another central office to assume control when a problem occurs in one central office, and further to appropriately compensate for various types of loss caused by various environmental factors, such as insertion loss caused by interfacing various devices with a ring type optical communication line and loss caused by the degradation of an optical cable.