Shooting long fiber spans with high loss fiber
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United States of America Patent
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Jun 4, 2019
Grant Date -
May 31, 2018
app pub date -
Jan 15, 2018
filing date -
Jan 31, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A method of tracing a complete span of a fiber includes inferring a reference point on the fiber based on a measured length of the fiber, setting a pulse width and a measurement range based on the inferred reference point, shooting a fiber from a master unit, attached to one end of the fiber, to collect trace past the inferred reference point, shooting a fiber from a slave unit, attached to an opposite end of the fiber, to collect trace past the inferred reference point, cropping the collected traces captured by the master unit and the slave unit past the inferred reference point, inverting a slope of the trace of the slave unit using measurement loss information and combining the trace of the master unit and the trace of the slave unit, with the inverted slope, to obtain a complete and accurate trace of the fiber.
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