Optical waveguide and process for manufacturing the same

Details Optical waveguide and process for manufacturing the same Optical waveguide and process for manufacturing the same

2007-12-11

2007-12-11

Kim, Ellen E. (Department: 2874)

Optical waveguides

Planar optical waveguide

Reexamination Certificate

active

11274261

ABSTRACT:
The present invention provides an optical waveguide, which at least includes: a waveguide core having a cavity therein; and a clad which encloses the periphery of the waveguide core and has a smaller refractive index than the waveguide core, wherein the optical waveguide changes a direction of a part or all of propagated light by using a part or all of an interface between the waveguide core and the cavity as a reflecting surface. The present invention further provides a method for manufacturing the optical waveguide, which at least includes: forming a core having a cavity therein on a substrate; applying an uncured clad material to a side surface and an upper portion of the core while maintaining the cavity which allows an atmospheric gas to be present in the cavity; and curing the clad material by heat or light to seal the gas in the cavity.

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