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Integrated optical XY coupler

United States Patent

5,627,929
May 6, 1997
View the Complete Patent at the US Patent & Trademark Office
Sandia National Laboratories - Visit the Intellectual Property Management and Licensing Website
An integrated optical XY coupler having two converging input waveguide arms meeting in a central section and a central output waveguide arm and two diverging flanking output waveguide arms emanating from the central section. In-phase light from the input arms constructively interfers in the central section to produce a single mode output in the central output arm with the rest of the light being collected in the flanking output arms. Crosstalk between devices on a substrate is minimized by this collection of the out-of-phase light by the flanking output arms of the XY coupler.
Vawter; G. Allen (Albuquerque, NM), Hadley; G. Ronald (Albuquerque, NM)
Sandia Corporation (Albuquerque, NM)
08/ 435,023
May 4, 1995
The Government has rights in this invention pursuant to contract No. DE-AC04-76DP00789 awarded by the U.S. Department of Energy.