Patent ID: 11955777
Assignee: FUJIKURA LTD.
Field: Optics (Instruments)
Classification: CPC H  B  G | IPC B  G  H

Claim 6:
7. The optical combiner as recited in claim 1, wherein
the output optical fiber further includes:
a core;
an inner cladding with a refractive index lower than a refractive index of the core of the output optical fiber and that surrounds an outer circumference of the core of the output optical fiber; and
a low-refractive-index medium having a refractive index lower than the refractive index of the inner cladding and that surrounds an outer circumference of the inner cladding,

the core of the output optical fiber forms the first optical waveguide, and
the core of the output optical fiber and the inner cladding form the second optical waveguide.