Abstract

A Passive Optical Network (PON) needs a protection scheme to ensure the system's reliability because the bulk of the equipment in an optical network resides in the optical access network portion with star topology. Fast protection switching is important for outage-free maintenance and rapid recovery from failure. This paper introduces two PON protection systems for fast protection switching under 50 ms. Comparisons indicate that N:1 and 1:1 schemes are, respectively, suitable for high-density cost-effective services and high-reliability business services.

© 2017 IEEE

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