Patent ID: 8649641

Claim:
An optical light Multi Mode Interferometer (MMI) splitter comprising: a first end wall that receives light from at least one input waveguide, the light from the at least one input waveguide having a direction of propagation toward a second end wall of the splitter opposite the first end wall; a body between the first and second end walls that is arranged to form at least two images of the light from the at least one input waveguide; and the second end wall having a first interior surface, which is oblique to the direction of propagation, where a first of the at least two images is received, and a second interior surface, which abuts the first interior surface, where a second of the at least two images is received, wherein the second end wall does not have any interior corners that reflect the light from the at least one input waveguide toward the first end wall, and wherein the second end wall transitions into only one output waveguide, the only one output waveguide being arranged to output, in the direction of propagation, the second of the at least two images that is received at the second interior surface.