Abstract
A perimeter intrusion detection system (PIDS) is a device that deploy in an outdoor environment at the boundaries or around sensitive areas in order to monitor, detect, and locate intruders in real time for assessment and reaction. PIDS plays a vital role in the whole security program such that the performance of PIDS affect the facility safety severely. Since traditional PIDSs have some shortages, an advanced PIDS is always in great demand. This thesis aims to provide an overview of the dual Mach-Zehnder interferometric perimeter intrusion detection system (DMZIPIDS), propose a simulation model for the system, and give advice on the design of the system in accordance with simulation results. In this thesis, the basic optical phase modulation mechanisms in optical fibers are described at first to clearly elaborate how the system works. Then, an introduction to the system, including its system structure, theory of operation, and noise sources as well as polarization-induced effects in the system, is described. A noise-involved and MATLAB-based simulation model of the system is proposed in order to predict the performance and study the characteristics of the system. Simulation results are presented and discussed. Experimental results of the system are presented and compared to the simulation results in the end. In comparison with other PIDSs that use different technologies, DMZIPIDS has many advantages. It is believed that, given time, DMZIPIDS would be one of the best PIDSs.