Light-wave circuit module and method for manufacturing the same
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsYoshio Kishimoto, Masahiro Mitsuda
Life of this patent
Estimating the term…
Abstract
The light-wave circuit module includes a substrate having a spot of substantially circular concave shape, an optically reflective film formed along an inner surface of the spot, and a planar optical waveguide passing through the spot. Light in the optical waveguide is reflected and focused obliquely upward by the optically reflective film in the spot.
Claims20
A light-wave circuit module comprising:
- a substrate having a spot of substantially circular concave shape;
- an optically reflective film formed along an inner surface of said spot;
- and
- a planar optical waveguide passing through said spot;
- wherein light of said optical waveguide is reflected and focused obliquely upward by said optically reflective film in said spot.
A light-wave circuit module comprising:
- a substrate having a spot of substantially circular concave shape;
- and
- a groove that is formed on said substrate and linked to a portion of a perimeter of said spot;
- wherein at least a portion of a planar optical waveguide is formed in said groove;
- wherein an optically reflective film is formed on an inner surface of said spot;
- wherein an end face of said planar optical waveguide is located at a periphery of said spot;
- and
- wherein light that is guided by said optical waveguide enters said spot from said end face and is focused on a focal point that is determined by said substantially circular concave shape.
A light-wave circuit module comprising:
- a substrate having a spot of substantially circular concave shape;
- and
- a slanted path that is formed on said substrate and linked to at least a portion of a perimeter of said spot;
- wherein at least a portion of a planar optical waveguide is formed on said slanted path;
- and
- wherein, on an inner surface of said spot, an optically reflective film is formed at least on a side that is in opposition to the side linked to said slanted path.
A light-wave circuit module comprising:
- a substrate having a spot of concave shape;
- and
- a groove that is formed on said substrate and linked to a portion of a perimeter of said spot;
- wherein at least a portion of a planar optical waveguide is formed in said groove;
- wherein an optically reflective film is formed on an inner surface of said spot;
- and
- wherein a bottom surface of said groove is located near a bottom surface of said optically reflective film in said spot.
A light-wave circuit module comprising:
- a substrate on which a plurality of spots of substantially circular concave shape are formed;
- and
- an optically reflective film formed along inner surfaces of said spots;
- wherein said spots are linked by a planar optical waveguide.
A light-wave circuit module comprising:
- a substrate having a first surface and a second surface substantially in opposition to the first surface;
- a spot of substantially circular concave shape that is formed on said first surface of said substrate;
- and
- an optically reflective film that is formed along an inner surface of said spot;
- wherein a first planar optical waveguide is provided on said first surface;
- wherein a second planar optical waveguide is provided on said second surface;
- wherein said first planar waveguide is linked to said spot;
- wherein a through hole connecting said first surface and said second surface is formed in a portion of said spot;
- and
- wherein said second planar optical waveguide is linked to said spot through a translucent medium that is filled into said through hole.
A light-wave circuit module, comprising:
- a step portion having a substantially circular arc-shaped surface or substantially spherical surface, formed on a substrate;
- an optical waveguide formed on said substrate;
- and
- a photodetector arranged above said step portion and receiving light that has been transmitted by said optical waveguide and reflected by said step portion.
A light-wave circuit module, comprising:
- a concave portion having a substantially circular arc-shaped surface or substantially spherical surface, formed on a substrate;
- an optical waveguide formed on said substrate;
- and
- a photodetector arranged above said concave portion and receiving light that has been transmitted by said optical waveguide and reflected by said concave portion.
A method for manufacturing a light-wave circuit module including a substrate having a spot of substantially circular concave shape and an optical waveguide linked to said spot, said method comprising:
- a step of preparing a substrate made of a polymer sheet;
- a step of forming a concave surface of said spot by subjecting said substrate to embossing by applying at least one selected from heat and pressure;
- and
- a step of forming an optical waveguide linked to said spot.
Dependencies are inferred from the claim text.