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US 2020/0264375 A1Published application
Optical element
AssigneesNEC Corporation, Photonics Electronics Technology Research Association
InventorsMasatoshi TOKUSHIMA, Jun USHIDA
Life of this patent
Estimating the term…
Abstract
To provide an optical element that can be more easily aligned with an optical fiber, an optical element includes one grating coupler optically coupled to an optical fiber, a waveguide connected to the grating coupler, a multimode interferometer connected to the waveguide on the opposite side to the grating coupler, and a waveguide inserted between two input/output ports on the branched side of the multimode interferometer.
Claims9
An optical element comprising:
- one optical coupler;
- a first waveguide connected to the optical coupler;
- an optical circuit including at least two input/output ports, the optical circuit being connected to an end of the first waveguide opposite to an end thereof to which the optical coupler is connected;
- a second waveguide connected to one of the input/output ports of the optical circuit different from the other one of the input/output ports connected to the first waveguide;
- a beam splitter connected to an end of the second waveguide opposite to an end thereof to which the optical circuit is connected;
- and
- a third waveguide configured to be inserted between two input/output ports disposed on a branched side of the beam splitter.
4 more elements
An optical element comprising:
- one optical coupler;
- a first waveguide connected to the optical coupler;
- a beam splitter connected an end of the first waveguide opposite to an end thereof to which the optical coupler is connected;
- a second waveguide connected to one of two input/output ports disposed on a branched side of the beam splitter;
- a third waveguide connected to the other one of the two input/output ports disposed on the branched side of the beam splitter;
- and
- an optical circuit configured to be inserted between the second waveguide and the third waveguide and include at least two input/output ports,
- wherein an end of the second waveguide opposite to an end thereof to which the beam splitter is connected is connected to one of the input/output ports of the optical circuit, and an end of the third waveguide opposite to an end thereof to which the beam splitter is connected is connected to the other one of the input/output ports of the optical circuit different from the input/output port connected to the second waveguide.
5 more elements
Dependencies are inferred from the claim text.