Non-contact methods of measuring insertion loss in optical fiber connectors
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United States of America Patent
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Sep 11, 2018
Grant Date -
May 11, 2017
app pub date -
Jan 24, 2017
filing date -
Jul 30, 2014
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Abstract
A non-contact method of measuring an insertion loss of a DUT connector is disclosed. The DUT connector has a first ferrule with a first optical fiber and a first end face. The method utilizes a reference connector having a second ferrule with a second optical fiber and a second end face. The method includes: axially aligning the first and second ferrules so that the first and second end faces are confronting and spaced apart to define a gap with an axial gap distance d; measuring values of the insertion loss between the first and second optical fibers for different gap distances d>0; and estimating a value for the insertion loss for a gap distance of d=0 based on the measured values of the insertion loss when d>0.
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