Optical assembly for 90° polarization rotation
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United States of America Patent
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Jan 10, 2017
Grant Date -
Dec 24, 2015
app pub date -
Jun 23, 2014
filing date -
Jun 23, 2014
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Abstract
An optical assembly maintains 90° polarization rotation. In one aspect, an optical assembly includes a polarization beam splitter a rotational element and a path exchange mirror. The temperature, wavelength and manufacturing dependencies of polarization rotation of this optical assembly are minimal to nonexistent compared to conventional Faraday rotation assemblies as the optical fiber accepts only the desired rotation. As such these optical assemblies have no temperature and wavelength dependencies of the polarization rotation angle over broad temperature and wavelength ranges with minimal additional losses.
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