Patent ID: 8915100

Claim:
An optical fiber end processing method, for processing an end of an optical fiber comprising a core part; a clad part surrounding an outer periphery of the core part; and a plurality of holes formed along an axial direction of the core part around the core part in the clad part, the optical fiber end processing method comprising: an optical fiber fixing step of fixing two parts of the optical fiber; a first heating step of heating a tip end side part of the optical fiber between two fixed parts fixed in the optical fiber fixing step, melting the optical fiber of the tip end side heating part, and relaxing a stress of a non-melting part, after the optical fiber fixing step; a second heating step of heating a part on a base end side of the optical fiber between the two fixed parts away from the tip end side heating part in a state that the two fixed parts of the optical fiber are fixed, and making the holes of the optical fiber disappear, after the first heating step; and a removing step of removing from the optical fiber by cutting, the tip end side heating part after the second heating step.