POLARISATION MAINTAINING OPTICAL FIBER PACKAGE
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United States of America Patent
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Issued Date -
May 26, 2016
app pub date -
Jul 10, 2014
filing date -
Jul 11, 2013
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Abstract
A polarisation maintaining optical fiber package is described. The fiber comprises a core having a core diameter, a first protective coating layer surrounding the core, the first protective coating layer having a first protective coating inner diameter, a first protective coating outer diameter and a first protective coating thickness between the first protective coating inner diameter and the first protective coating outer diameter, a second protective coating layer surrounding the first protective coating layer, the second protective coating layer having a second protective coating inner diameter and a second protective coating outer diameter, the first protective coating layer comprising a material having a first hardness and the second protective coating layer comprising a material having a second hardness, wherein the thickness of the first protective coating layer is in the range from 6% to 33% of the core diameter. The thickness of the coatings in the package is such that the optical fiber core exhibits a reduction in strain and stress sensitivity over a wide range of temperatures, even down to around minus 20 degrees C.
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