HEAT-TREATMENT DEVICE AND HEAT TREATMENT OF OPTICAL FIBER REINFORCING MEMBER AND OPTICAL FIBER FUSION SPLICING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a heat-treatment device and a heat treatment in which the temperature rising of non-contact parts in the exothermic part of a planar heating element is suppressed in the heat-treatment of the optical fiber reinforcing member using the planar heating element.;SOLUTION: This heat-treatment device or the heat treatment of the optical fiber reinforcing member is a heat-treatment device or a heat treatment which performs heating contraction of the optical fiber reinforcing member for protecting the fusion splicing part of an optical fiber 11 and it is constituted so that a heating part is formed with a planar heating element 13 which is curved in U-shape and the exothermic temperature of side exothermic parts of the U shape in the exothermic part 13b of the planar heating element 13 are made lower than the exothermic temperature of the central exothermic part. Moreover, the power density of the side exothermic parts of the U shape in the exothermic part 13b of the planar heating element 13 is made so as to become 80% or less of that of the central exothermic part.;COPYRIGHT: (C)2005,JPO&NCIPI