Design of ftth monitoring system based on zigbee wireless sensor network

As part of its ongoing efforts to support the nation´s call for higher broadband speeds, Telekom Malaysia Berhad (TM) started to launch the new fibre-to-the-home (FTTH) broadband access solution by the second half of 2008, which will offer users the preliminary step towards the digital home experience. Fault protection became important issues in order to present an efficient FTTH network and simultaneously and provide continuous services to the end user without being interrupted by any failure in fiber lines. The failure at optical lines will give two negative impacts. First, the fiber cut will cause optical leakage that is able to damage our eyes. Second, an interruption will occur during the distribution of multimedia service to customers for a long period of time. In the traditional method, when there is a breakdown in FTTH lines, the engineer must go to the failure location to check the optical cable using an optical time-domain reflect meter (OTDR). The disadvantage of this conventional method is that the engineer must leave the Central Office to inject a laser from customer location. It will cause inconvenience, service disruption and waste valuable time for both parties. We proposed optical sensor integrated with wireless sensor network to determine the condition of all optical lines in FTTH network. This system is capable to monitor the condition of all optical lines and make automatic switching for restoration purpose. Every sensor will be put in every line and can communicate each others to ensure the operation of network. One receiver is located in Central Office (CO) to allow engineer to monitor and control all optical lines.