US PATENT SUBCLASS 385 / 130
.~ Thin film optical waveguide


Current as of: June, 1999
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385 /   HD   OPTICAL WAVEGUIDES

129  DF  PLANAR OPTICAL WAVEGUIDE {1}
130.~ Thin film optical waveguide {2}
131  DF  .~.~> Multilayer structure (mixture)
132  DF  .~.~> Channel waveguide


DEFINITION

Classification: 385/130

Thin film optical waveguide:

(under subclass 129) Subject matter wherein the structure that is used to confine and guide the light through modal transmission is a dielectric rib, planar, or channel waveguide.

(1) Note. The thin-film is a thin layer of light transmitting material, usually deposited by sputtering or evaporation, that may be made in a pattern to form an optical waveguide on, or adjacent to, a supporting substrate.

(2) Note. This subclass includes graded index thin-film waveguides.

SEE OR SEARCH CLASS

359, Optics: Systems (Including Communication) and Elements,

332, for a dielectric optical waveguide used in frequency converters.