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Novel self-healing fiber-in-the-loop architectures

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Self-healing fiber-in-the-loop (FITL) architectures may be needed in the near future to support new services that require high survivability in the distribution network.1,2 We investigate novel optical diverse-path and 1:1/1:N equipment-protection techniques for two-fiber point-to-multipoint (PTM-2F) and one-fiber point-to-point (PTP-1F) FITL architectures. Full survivability of the distribution fiber network with respect to single-point fiber and optical-splitter failures was obtained at an incremental cost of less than 10% per line, a surprising result in view of the low degree of equipment and facility sharing in fiber distribution networks.

© 1994 Optical Society of America

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