Patent ID: 11971579
Assignee: MITSUBISHI ELECTRIC CORPORATION
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 1:
2. A multi-mode interferometric optical waveguide device, comprising:
a multi-mode interferometric optical waveguide which includes a reflective portion;
a first single-mode waveguide;
a second single-mode waveguide;
a third single-mode waveguide;
the reflective portion includes a first reflective surface and a second reflective surface,
the multi-mode interferometric optical waveguide has a first end, a second end opposite the first end, a first side connecting the first end and the second end, and a second side opposite the first side, the second side connecting the first end and the second end,
the first single-mode waveguide is connected to the first end,
the first reflective surface is disposed at a first portion of the second end proximal to the first side,
the second reflective surface is disposed at a second portion of the second end proximal to the second side,
the second single-mode waveguide is opposite the first reflective surface, and connected to the first side at a first connection portion,
the third single-mode waveguide is opposite the second reflective surface, and connected to the second side at a second connection portion;
a first image forming portion for light output to the second single-mode waveguide is located at the first connection portion; and
a second image forming portion for light output to the third single-mode waveguide is located at the second connection portion,
wherein when light enters the first single-mode waveguide, the light is self-imaged in the first connection portion and the second connection portion.