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        Redundancy Strategies for a High Splitting Optically Amplified Passive Optical Network

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        Author
        Phillips, A.J.
        Senior, J.M.
        Mercinelli, R.
        Valvo, M.
        Vetter, P.J.
        Martin, C.M.
        Van Deventer, M.O.
        Vaes, P.
        Qui, X.Z.
        Attention
        2299/1094
        Abstract
        High splitting, optically amplified, passive optical networks (SuperPONs) are investigated in terms of redundancy provision and protection mechanisms. Options for redundancy, including the important special case of dual homing, are detailed, and it is determined as to which of these options (duplication of the feeder and first distribution section, and N+1 protection of the optical amplifiers in the amplified splitter) would be required to be provided to all attached users to facilitate appropriate availability of the basic telephony service. The distributed amplified splitter dual homing solution is found to outperform the single amplified splitter solution in terms of its survivability. The protection mechanisms necessary to automatically switch to the redundant provision are discussed and it is seen that with the aid of suitable regular precautionary procedures protection switching can generally be provided rapidly (<50 ms). Finally, an availability, and cost versus availability, study confirms the aforementioned redundancy assessment for fiber-to-the-home (FTTH) implementations, but shows fiber-to-the-curb (FTTC) as needing additional redundancy
        Publication date
        2001
        Published in
        Journal of Lightwave Technology
        Published version
        https://doi.org/10.1109/50.917866
        Other links
        http://hdl.handle.net/2299/1094
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