Fiber optic gyroscope with front end polarizer
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United States of America Patent
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Jan 10, 2017
Grant Date -
May 15, 2014
app pub date -
Nov 14, 2012
filing date -
Nov 14, 2012
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Abstract
A fiber optic gyroscope (FOG) is provided. The FOG comprises a depolarizer that receives light from a light source, a multifunction integrated optic chip (MIOC) and a sensing coil coupled to outputs of the MIOC. The FOG also includes a polarizer coupled between an output of the depolarizer and an input of the MIOC. The polarizer mitigates polarization non-reciprocity (PNR) bias error and enhances the polarization extinction ratio (PER) of the FOG.
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