Optical fiber that combines and demultiplexes light

Abstract

The present disclosure is an optical multiplexing/demultiplexing fiber having a core uniformly and continuously extending in a propagation direction; the fiber includes an optical waveguide for optically connecting one end face of the optical fiber and a side face of the core, in which an end part of the optical waveguide, on the side face side of the core, is coupled to the core.

Dependencies are inferred from the claim text.