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US 12,687,676 B2Granted
Optical chip and optical communication apparatus
AssigneeFujitsu Optical Components Limited
InventorMasaki Sugiyama
Life of this patent
Estimating the term…
Abstract
An optical chip includes a chip area located on a wafer, and an optical circuit arranged in the chip area. The optical chip includes a first waveguide that is connected to a first operational fiber, a second waveguide, and a first coupler that includes a first port that is connected to the first waveguide and the second waveguide and a second port that is connected to the optical circuit. Furthermore, the optical chip includes a first trench that is formed on a surface of the chip area, that is connected to the second waveguide, and in which a first test purpose fiber is inserted.
Claims14
An optical chip including a chip area located on a wafer and an optical circuit arranged in the chip area, the optical chip comprising:
- a first waveguide that is connected to a first operational fiber;
- a second waveguide;
- a first coupler that includes
- a first port that is connected to the first waveguide and that is connected to the second waveguide, and
- a second port that is connected to the optical circuit;
- a first trench that is formed on a surface of the chip area and that is connected to the second waveguide;
- a third waveguide that is connected to a second operational fiber;
- a fourth waveguide;
- a second coupler that includes
- a third port that is connected to the third waveguide and that is connected to the fourth waveguide, and
- a fourth port that is connected to the optical circuit;
- and
- a second trench that is formed on the surface of the chip area and that is connected to the fourth waveguide;
- and
- wherein
- the first trench in which a first test purpose fiber is inserted is connected to the second waveguide, and
- the second trench in which a second test purpose fiber is inserted is connected to the fourth waveguide.
14 more elements
An optical communication apparatus comprising:
- an optical chip that includes a chip area located on a wafer and an optical circuit arranged in the chip area, wherein
- the optical circuit includes
- a first modulator,
- a second modulator,
- a first receiver, and
- a second receiver, and
- the chip area includes
- a first waveguide that is connected to a first operational fiber that is used for local emission light,
- a second waveguide,
- a first coupler that includes
- a first port that is connected to the first waveguide and that is connected to the second waveguide, and
- a second port that is connected to the optical circuit,
- a first trench that is formed on a surface of the chip area and that is connected to the second waveguide,
- a third waveguide that is connected to a second operational fiber that is used for reception light,
- a fourth waveguide,
- a second coupler that includes
- a third port that is connected to the third waveguide and that is connected to the fourth waveguide, and
- a fourth port that is connected to the first receiver,
- a second trench that is formed on the surface of the chip area and that is connected to the fourth waveguide,
- a fifth waveguide,
- a third coupler that includes
- a fifth port that is connected to the third waveguide and that is connected to the fifth waveguide, and
- a sixth port that is connected to the second receiver,
- a third trench that is formed on the surface of the chip area and that is connected to the fifth waveguide,
- a sixth waveguide that is connected to a third operational fiber that is used for transmission light,
- a seventh waveguide,
- a fourth coupler that includes
- a seventh port that is connected to the sixth waveguide and that is connected to the seventh waveguide, and
- an eighth port that is connected to the first modulator,
- a fourth trench that is formed on the surface of the chip area and that is connected to the seventh waveguide,
- an eighth waveguide,
- a fifth coupler that includes
- a ninth port that is connected to the sixth waveguide and that is connected to the eighth waveguide, and
- a tenth port that is connected to the second modulator, and
- a fifth trench that is formed on the surface of the chip area and that is connected to the eighth waveguide.
32 more elements
An optical receiver comprising an optical chip that includes a chip area located on a wafer and an optical circuit arranged in the chip area, wherein
- the optical circuit includes
- a first receiver, and
- a second receiver, and
- the chip area includes
- a first waveguide that is connected to a first operational fiber that is used for local emission light,
- a second waveguide,
- a first coupler that includes
- a first port that is connected to the first waveguide and that is connected to the second waveguide, and
- a second port that is connected to the optical circuit,
- a first trench that is formed on a surface of the chip area and that is connected to the second waveguide,
- a third waveguide that is connected to a second operational fiber that is used for reception light,
- a fourth waveguide,
- a second coupler that includes
- a third port that is connected to the third waveguide and that is connected to the fourth waveguide, and
- a fourth port that is connected to the first receiver,
- a second trench that is formed on the surface of the chip area and that is connected to the fourth waveguide,
- a fifth waveguide,
- a third coupler that includes
- a fifth port that is connected to the third waveguide and that is connected to the fifth waveguide, and
- a sixth port that is connected to the second receiver, and
- a third trench that is formed on the surface of the chip area and that is connected to the fifth waveguide.
18 more elements
An optical transmitter comprising an optical chip that includes a chip area located on a wafer, and an optical circuit arranged in the chip area, wherein
- the optical circuit includes
- a first modulator, and
- a second modulator, and
- the chip area includes
- a first waveguide that is connected to a first operational fiber that is used for local emission light,
- a second waveguide,
- a first coupler that includes
- a first port that is connected to the first waveguide and that is connected to the second waveguide, and
- a second port that is connected to the optical circuit,
- a first trench that is formed on a surface of the chip area and that is connected to the second waveguide,
- a third waveguide that is connected to a second operational fiber that is used for transmission light,
- a fourth waveguide,
- a second coupler that includes
- a third port that is connected to the third waveguide and that is connected to the fourth waveguide, and
- a fourth port that is connected to the first modulator,
- a second trench that is formed on the surface of the chip area and that is connected to the fourth waveguide,
- a fifth waveguide,
- a third coupler that includes
- a fifth port that is connected to the third waveguide and that is connected to the fifth waveguide, and
- a sixth port that is connected to the second modulator, and
- a third trench that is formed on the surface of the chip area and that is connected to the fifth waveguide.
18 more elements
Dependencies are inferred from the claim text.