Optical wiring device
AssigneeKabushiki Kaisha Toshiba
InventorHideto Furuyama
Life of this patent
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Abstract
An optical wiring device providing characteristics of optical connection leads while having substantially the same mountability as that of electrical wiring devices. According to the present invention, an optical axis of a photoelectric conversion element is made consistent with an optical axis of an optical terminal having a spherical shape through a tapered hole provided in a package substrate. An optical wiring substrate includes a concave portion attached to the package substrate with the optical terminal at the position of the concave portion. The optical terminal serves as a fitting part between the package substrate and the optical wiring substrate. By putting the focal point of the optical terminal within the optical wiring substrate, an optical wiring is not exposed to the external atmosphere.
Claims28
An optical wiring device, comprising:
- a substrate having a first surface and a second surface on an opposite side of the first surface, and having a hole through the substrate between the first and said second surfaces;
- an integrated circuit disposed on the first surface of the substrate;
- an electrical wiring provided on said first surface of said substrate and connected to said integrated circuit;
- a photoelectric conversion element provided on the first surface of the substrate and configured to convert between electrical signals and optical signals;
- and
- an optical terminal disposed in contact with the hole on a side of the second surface of the substrate,
- wherein the electrical signals are transmitted between the photoelectric conversion element and the integrated circuit, and said optical signals are transmitted to and from the photoelectric conversion element through the optical terminal.
An optical wiring device, comprising:
- a first substrate having a first surface and a second surface on an opposite side of the first surface, and having a hole through the first substrate between the first and second surfaces;
- an integrated circuit disposed on the first surface of the first substrate;
- a photoelectric conversion element provided on the first surface of the first substrate and configured to convert between electrical signals and optical signals;
- an optical terminal disposed in contact with the hole on a side of the second surface of the first substrate;
- and
- a second substrate having an optical wiring, and being attached to the first substrate with the optical terminal therebetween,
- wherein the electrical signals are transmitted between the photoelectric conversion element and the integrated circuit, and the optical signals are transmitted between the photoelectric conversion element and the optical wiring through the optical terminal.
An optical wiring device, comprising:
- a first substrate;
- an integrated circuit disposed on the first substrate;
- a photoelectric conversion element provided on the first substrate and configured to convert between electrical signals and optical signals;
- an optical terminal opposing the photoelectric conversion element;
- a second substrate having a first optical wiring, and being attached to the first substrate with the optical terminal therebetween, said first optical wiring comprising a first clad layer and a first optical waveguide surrounded by said first clad layer;
- and
- a second optical wiring comprising a second clad layer and a second optical waveguide surrounded by the second clad layer,
- wherein a part of the first optical waveguide is not covered by the first clad layer so as to be exposed therefrom, and the second optical wiring is attached to the first optical waveguide in a direction extending along the first optical waveguide at the exposed part of the first optical waveguide, and
- wherein the electrical signals are transmitted between the photoelectric conversion element and the integrated circuit, and the optical signals are transmitted between the photoelectric conversion element and the first and second optical wirings through the optical terminal.
Dependencies are inferred from the claim text.