Study of passive optical network monitoring based on non-OTDR

Abstract

Aiming at the defects of passive optical network (PON) monitoring based on optical time domain reflectometry (OTDR) technology, we research the non-OTDR monitoring technology. The coding scheme based on periodic encoder monitoring is discussed, and its limitation is analyzed. On this basis, the monitoring technology based on optical code division multiple access (OCDMA) is put forward. We analyze the feasibility of monitoring scheme based on PON of OCDMA, design a monitoring plan, and then use OptiSystem to simulate the design. The results of simulation and bit error rate (BER) analysis show that this monitoring technology can overcome the deficiencies of OTDR and distinguish the monitoring signals of different fiber branches clearly, which meets the demands for high beam split ratio of multi-user communication.

Keywords

Code Word / Optical Network Unit / Monitoring Technology / Erbium Dope Fiber Amplifier / Passive Optical Network

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This work has been supported by the Key Projects of Natural Science Funds of Guangxi Colleges and Universities (No.201202ZD010), and Guilin Scientific Research and Technological Development Program Topics (No.20120104-18).