Real Time Optical Network Monitoring and Surveillance System

Optical diagnosis, performance monitoring, and characterization are essential for achieving high performance and ensuring high quality of services (QoS) of any efficient and reliable optical access network. In this paper, we proposed a practical in-service transmission surveillance scheme for passive optical network (PON). The proposed scheme is designed and simulated by using the OptiSystem CAD program with the system sensitivity - 35 dBm. A real time optical network monitoring software tool named Smart Access Network _ Testing, Analyzing and Database (SANTAD) is introduced for providing remote controlling, centralized monitoring, system analyzing, and fault detection features in large scale network infrastructure management and fault diagnostic. 1625 nm light source is assigned to carry the troubleshooting signal for line status monitoring purposes in the live network system. Three acquisition parameters of optical pulse: distance range, pulse width, and acquisition time, is contributed to obtain the high accuracy in determining the exact failure location. The lab prototype of SANTAD was implemented in the proposed scheme for analyzing the network performance. The experimental results showed SANTAD is able to detect any occurrence of fault and address the failure location within 30 seconds. The main advantages of this work are to manage network efficiently, reduce hands on workload, minimize network downtime and rapidly restore failed services when problems are detected and diagnosed.