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AssigneeNEC Corporation
InventorsTadayuki IWANO, Yoshiaki Aono, Naoto Saeki
Estimating the term…
An OLT, a plurality of ONUs, an optical fiber connected to the OLT, a plurality of optical fibers connected to each of the plurality of ONUs, an optical output unit configured to output pulsed light to the optical fiber, a plurality of reflection units provided in each of the plurality of optical fibers, a branching unit configured to connect the optical fiber and each of the plurality of optical fibers, an optical input unit configured to receive the reflected light from the optical fiber, and a detection unit configured to analyze a pattern of the reflected light to detect a failure of the optical fiber provided with the reflection unit that has output the reflected light are provided, in which each of the plurality of reflection units can individually switch execution of reflection of the pulsed light.
An optical fiber sensing system comprising:
An optical fiber sensing method by an optical fiber sensing system, the optical fiber sensing system including
An ONU among a plurality of optical network units (ONUs) in an optical fiber sensing system including an optical line terminal (OLT), the plurality of ONUs, a first optical fiber transmission line connected to the OLT, a plurality of second optical fiber transmission lines connected to each of the plurality of ONUs, and a branching device connecting the first optical fiber transmission line and each of the plurality of second optical fiber transmission lines, the ONU comprising a reflector,
(canceled)
Dependencies are inferred from the claim text.