STM-16 Optical Ring System

摘要

Communication traffic is constantly increasingin submarine optical fiber cable network systems used forinternational telecommunications, and the provision ofcomplementary detouring transmission lines for thesenetworks by means of satellite transmission is becomingdifficult. The need has therefore arisen for an optical ringsystem with a self-healing type protection function in orderto handle large-capacity communication traffic without service interruptions.We have developed the STM-16 network protectionequipment (NPE), which has the line protection functiondefined by the International Telecommunication Union-Telecommunications (ITU-T), and are supplying it tovarious networks such as the TPC-5 cable network as kernelequipment in the first self-healing type optical ring system inthe world currently in commercial service. This paperdescribes the major features and technical engineeringservices related to this submarine optical fiber cable network system.