Fusion splicing method and fusion splicer for different-diameter optical fibers

摘要

A method of fusion splicing optical fibers with different diameters, comprising: (a) preheating for a predetermined period of time an end of a large-diameter optical fiber; (b) advancing relatively the small-diameter optical fiber toward large diameter fiber; (c) preheating for a predetermined period of time the ends of the both optical fibers; (d) advancing at least one of the optical fibers so that end faces of the optical fibers are brought into contact with each other; and (e) heating a predetermined period of time the faces of the optical fibers.