Apparatus and method for the reduction of polarization sensitivity in diffraction gratings used in fiber optic communications devices

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United States of America Patent

PATENT NO 6400509
SERIAL NO

09675768

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Abstract

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A diffraction grating for use in multiplexing and demultiplexing optical signals in optical communication systems having reduced polarization sensitivity has a plurality of grooves including reflective step surfaces and transverse riser surfaces separated by a flat. The step surfaces have a reflective coating and the riser surfaces do not have a reflective coating. A method of making a reflective diffraction grating includes forming a plurality of grooves in a substrate, the grooves having a step surface for reflecting an incident beam, a transverse riser and a flat therebetween and providing a reflective coating on the steps and not on the risers.

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Patent Owner(s)

  • ZOLO TECHNOLOGIES, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bach, Bernhard W Boulder, CO 1 20
Sappey, Andrew D Lakewood, CO 33 392

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