Beam combiner for high-power signal, and manufacturing method for same

A method for manufacturing a beam combiner for a high-power signal, comprising:

• at a first step, stripping portions of input coating layers of a plurality of input optical fibers to expose optical fiber input cladding layers of the input optical fibers corresponding to the portions;
• stripping a portion of an output coating layer of an output optical fiber to expose an optical fiber input cladding layer of the output optical fiber corresponding to the portion;
• at a second step, etching the exposed optical fiber input cladding layers by a laser to form etching planes, so that cross sections of the optical fiber input cladding layers corresponding to the portions are fan-shaped or hexagonal and the etching planes are provided with grooves and/or protrusions in an axial direction;
• at a third step, nesting and matching the grooves and protrusions on the plurality of input optical fibers with each other to form a beam combination optical fiber;
• at a fourth step, truncating an end face of the beam combination optical fiber before connecting the end face to the output optical fiber with the exposed optical fiber output cladding layer, to complete the manufacturing of the beam combiner for the high-power signal.