In-service remote access and measurement system for passive double star networks

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作者：

NTT Telecommunication Field Systems, R & D Cent, Ibaraki-ken, Japan ^{[1
]}

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来源：

J Opt Commun | / 4卷 / 131-137期

关键词：

Broadband networks - Flat cables - Frequency division multiplexing - Light transmission - Optical communication - Optical communication equipment - Optical variables measurement - Reflectometers;

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暂无

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摘要：

This paper proposes a new system for the remote access and measurement of branched fibers in passive double star networks. In this system, the key technologies are the wavelength division multiplexing (WDM) technique and a wavelength variable optical time domain reflectometer (OTDR) which has several measurement wavelengths. These technologies are used for the remote injection of a measurement light into a particular in-service branched fiber or fiber ribbon. The feasibility of the system was confirmed by an experiment using a 2×16 optical splitter incorporating WDM technology. A specific 4-fiber ribbon fault was located from among four 4-fiber ribbons without disrupting signal transmission at 1.31/1.55 μm by using an OTDR operating at 1.61 to approximately 1.68 μm.

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