Integratable planar waveguide type non-reciprocal polarization rotator
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United States of America Patent
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Feb 13, 2018
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Apr 20, 2016
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Apr 21, 2015
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Abstract
The present invention describes a planar waveguide-type integrated non-reciprocal polarization rotator. According to an embodiment of the present invention, the planar waveguide-type non-reciprocal 90° polarization rotator includes optical waveguide-type input and output ports, a reciprocal 45° polarization rotator based on an asymmetric optical waveguide structure, a non-reciprocal 45° polarization rotator based on an optical waveguide with a clad layer of magneto-optic material, and a phase compensator placed between the above reciprocal 45° polarization rotator and non-reciprocal 45° polarization rotator compensating the phase difference between two polarization modes.
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