Two PON systems architecture of EPON and WDM-PON have been researched.(2) Aφ-OTDR sensing system based on EDFA is designed and constructed. Disturbed signal experiments of system are completed. Sensor network design has been optimized.(3) The characters of this system which can provide security service and self-locate physical faults have been wedding dresses 2010 researched. The scheme, network performance, feasibility, cost, compatibility and other issues which are related to the integration of two networks also have been analysed concretely.(4)polo shirts shop sensing network and EPON communications network are integrated together. By processing the returned signal properly, the system can locate the intrusion point within the distance range of 13km, and ugg boots 2010 achieve the spatial resolution of 100m.(5) The data acquisition and analysis technology is described, and the testing software ofφ-OTDR is developed on the basis of personal computer with the tool of best clothes blog Visual C++.(6) A WDM-PON experimental system is designed and constructed. The performance of this system is tested.(7)φ-OTDR sensing network and WDM-PON communications network are dresses 1std integrated together. By processing the returned signal properly, the system can locate the intrusion point within the distance range of 11km, and achieve the spatial resolution of 100m.
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