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Subwavelength photonic crystal waveguide with trapezoidal shaped dielectric pillars in optical systems

United States Patent

9,563,016
February 7, 2017
View the Complete Patent at the US Patent & Trademark Office
A method for reducing loss in a subwavelength photonic crystal waveguide bend is disclosed. The method comprising: forming the subwavelength photonic crystal waveguide bend with a series of trapezoidal shaped dielectric pillars centered about a bend radius; wherein each of the trapezoidal shaped dielectric pillars comprise a top width, a bottom width, and a trapezoid height; wherein the length of the bottom width is greater than the length of the top width; and wherein the bottom width is closer to the center of the bend radius of the subwavelength photonic crystal waveguide bend than the top width. Other embodiments are described and claimed.
Xu; Xiaochuan (Austin, TX), Chen; Ray T. (Austin, TX)
Omega Optics, Inc. (Austin, TX)
14/ 951,464
November 24, 2015
I. STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH This invention was made with Government support under grant DE-SC0013178 awarded by the Department of Energy (DOE). The Government has certain rights in this invention.