US 2025/0208342 A1 · OPTICAL CIRCUIT AND METHOD OF MANUFACTURING OPTICAL CIRCUIT

Abstract

An optical circuit includes a substrate; a first optical waveguide disposed on the substrate; and a second optical waveguide disposed on the substrate and configured to be optically coupled to the first optical waveguide. The first optical waveguide includes a first cladding, a second cladding, and a first core disposed between the first cladding and the second cladding. The second optical waveguide includes a third cladding, a fourth cladding, and a second core disposed between the third cladding and the fourth cladding. The first cladding is disposed closer to the substrate than the second cladding is. The third cladding is disposed closer to the substrate than the fourth cladding is. A material of the first cladding differs from a material of the third cladding.

Claims18

Dependent claims

An optical circuit comprising:

a substrate;
a first optical waveguide disposed on the substrate;
and
a second optical waveguide disposed on the substrate and configured to be optically coupled to the first optical waveguide, wherein:
the first optical waveguide comprises a first cladding, a second cladding, and a first core disposed between the first cladding and the second cladding,
the second optical waveguide comprises a third cladding, a fourth cladding, and a second core disposed between the third cladding and the fourth cladding,
the first cladding is disposed closer to the substrate than the second cladding is,
the third cladding is disposed closer to the substrate than the fourth cladding is, and
a material of the first cladding differs from a material of the third cladding.

6 more elements

A method of manufacturing an optical circuit, the method comprising:

providing a first layered body comprising a first substrate, a first cladding, a first core, a second cladding, and a first protective layer that are arranged in this order;
providing a second layered body comprising a second substrate, a third cladding, a second core, and a second protective layer that are arranged in this order, the third cladding comprising a material different from a material of the first cladding;
arranging the first layered body and the second layered body side by side such that the first core and the second core face each other, and fixing the first protective layer and the second protective layer to a temporary substrate;
bonding the first substrate and the second substrate to a third substrate;
after the bonding of the first substrate and the second substrate to the third substrate, removing the temporary substrate;
processing the first layered body to obtain a first optical waveguide comprising the first cladding, the first core, and the second cladding;
and
processing the second layered body to obtain a second optical waveguide comprising the third cladding and the second core, the obtained second optical waveguide being optically coupled to the first optical waveguide.

5 more elements

Dependencies are inferred from the claim text.

Optical circuit and method of manufacturing optical circuit

Life of this patent

Optical circuit and method of manufacturing optical circuit

Life of this patent

Abstract

Claims18