Design and Construction of Security Monitoring System for Optical Fibre Communications

Despite the fact that security monitoring system is high in communications using optical fibre, communications are still easy to be penetrated and information could be stolen. Companies have developed tools and equipment bugging and stealing data sent over optical fibre network, especially in those areas experiencing high loss of optical signal. Thus, it has become necessary to design and construct monitoring and warning system to avoid penetration or access to optical cable network. It is more convenient to install field application and control security system for optical cable communications that are parallel with the oil transportation pipeline. The project aims to sending a signal light with low-power ability and sensitivity by using Wavelengths Division Multiplexer (WDM), Dense Wavelengths Division Multiplexer (DWDM), and Optical Time Domain Reflect Meter (OTDR) as measurement and Optical Spectrum Analyser as a detector (OSA). The system is then used in monitoring oil and gas pipeline leakage or muggers and monitoring damage in the body of dams by adding fibre optics sensors. The sensors are to be distributed on the surface and connected with each other in the form of retinal rings to reach the receiving devices. It could also monitor ranges reaching to up about a hundred kilometres.