Optical waveguides – With optical coupler – Input/output coupler
Reexamination Certificate
2007-08-21
2007-08-21
Song, Sarah (Department: 2874)
Optical waveguides
With optical coupler
Input/output coupler
Reexamination Certificate
active
10776146
ABSTRACT:
Various configurations of elongate scattering elements in an optical waveguide grating coupler for coupling light between a planar waveguide and an optical element such as an optical fiber, where the light may have a Gaussian intensity distribution. The elongate scattering elements are preferably curved, and in some embodiments, the scattering elements have elliptically curved shape. One or more of the elongate scattering elements may be segmented into various geometrical shapes, such as rectangular, square, circular and elliptical. The elongate scattering elements have at least one characteristic selected from the group consisting of grating width, height, spacing, depth and index of refraction forming the elongate scattering elements, where the magnitude of the at least one characteristic varies irregularly with position along the guiding portion of the optical waveguide grating coupler.
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Gunn III Lawrence C.
Pinguet Thierry J.
Rattier Maxime J.
Fernandez & Associates LLP
Luxtera Inc.
Song Sarah
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