Optical isolator and light source device
AssigneeKYOCERA Corporation
InventorsHiromichi Yoshikawa, Naoki Matsui, Tomoya Sugita
Life of this patent
Estimating the term…
Abstract
An optical isolator 10 according to the present disclosure includes a substrate 11 and an optical waveguide 12 provided on the substrate 11. The optical waveguide 12 includes a first end part 13, a plurality of second end parts 14 arranged in an array, and at least one branching part 18 located between the first end part 13 and the plurality of second end parts 14. The optical waveguide 12 has a portion having non-reciprocity and gives different non-reciprocal phase shift amounts between the first end part 13 and at least two of the second end parts 14.
Claims13
An optical isolator comprising:
- a substrate;
- and
- an optical waveguide provided on the substrate,
- the optical waveguide including:
- a first end part,
- a plurality of second end parts arranged in an array,
- at least one branching part located between the first end part and the plurality of second end parts, and
- a portion having non-reciprocity that provides different non-reciprocal phase shift amounts between the first end part and at least two second end parts of the plurality of second end parts,
- wherein the plurality of second end parts are arranged at a predetermined pitch, and the different non-reciprocal phase shift amounts regularly differ between adjacent second end parts of the plurality of second end parts.
A light source device comprising:
- an optical isolator including a substrate and an optical waveguide provided on the substrate, the optical waveguide including a first end part, a plurality of second end parts arranged in an array, a branching part located between the first end part and the plurality of second end parts, and a portion having non-reciprocity, the optical waveguide providing different non-reciprocal phase shift amounts between the first end part and at least two second end parts of the plurality of second end parts, and the plurality of second end parts are arranged at a predetermined pitch, and the different non-reciprocal phase shift amounts regularly differ between adjacent second end parts of the plurality of second end parts;
- and
- a light source disposed so that light emitted from the light source enters the first end part or the plurality of second end parts of the optical isolator.
An optical isolator comprising:
- a substrate;
- and
- an optical waveguide provided on the substrate,
- the optical waveguide including:
- a first end part,
- a plurality of second end parts arranged in an array,
- at least one branching part located between the first end part and the plurality of second end parts,
- a portion having non-reciprocity that provides different non-reciprocal phase shift amounts between the first end part and at least two second end parts of the plurality of second end parts, and
- a non-reciprocal member disposed in contact with the portion having non-reciprocity of the optical waveguide,
- wherein a volume of the non-reciprocal member is equal to or less than a half of a volume of the portion having non-reciprocity of the optical waveguide.
Dependencies are inferred from the claim text.