Optical fiber alignment jig, optical fiber fusion splicer equipped with optical fiber alignment jig, and method for aligning optical fiber

An optical fiber alignment jig for aligning a plurality of optical fibers tip end coating of which is stripped off to expose glass fibers comprising:

• a rail;
• a convex push-up portion that is movable along an extending direction of the rail;
• and
• a plurality of plate-shaped members each having a first surface and a second surface which are perpendicular to the extending direction of the rail, and an inclined surface on which one of the plurality of optical fibers is placeable, the inclined surfaces of the plurality of plate-shaped members being inclined in the same direction with respect to the extending direction, the plurality of plate-shaped members being arranged in parallel along the extending direction such that a first surface of one plate-shaped member among the plurality of plate-shaped members faces a second surface of an adjacent plate-shaped member, and configured to move toward an inclined surface side when come into contact with the push-up portion.