Edge propagating optical time domain reflectometer and method of using the same
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United States of America Patent
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Sep 5, 2017
Grant Date -
Feb 4, 2016
app pub date -
Jun 30, 2015
filing date -
Jul 31, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
An OTDR system utilizes a laser source that is turned “on” and kept powered until its light reaches the end of the fiber span being measured (i.e., until the fiber span is fully illuminated). At any point in time after the fiber is fully illuminated, the laser source can be turned “off”. The return (reflected and backscattered) signal is directed into a photodetector of the OTDR, and is measured from the point in time when the fiber span starts to be illuminated. The measurements are made by sampling the return signal at predetermined time intervals—defined as the sampling rate. The created power samples are then subjected to post-processing in the form of a differentiation operation to create a conventional OTDR trace from the collected data.
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International Classification(s)
- G01J:MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTE....
- G01M:TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR S....
- G01N:INVESTIGATING OR ANALYSING MATERIALS BY DETERMININ....
- H04B:TRANSMISSION
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
- G01B:MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIME....
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