Method for measuring bending loss of optical fiber

• Main Authors: TERAUCHI TOMOKO, HATANAKA TOMOYOSHI, KAWAGUCHI YUKI, JUNG JONG-DAE
• Format: Patent
• Language: Chinese; English
• Published: 14.02.2023
• Subjects: MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

A method for measuring the bending loss of an optical fiber obtains the bending loss of the optical fiber by applying a bend to the optical fiber using a plurality of mandrels (illustrated by a fixed mandrel 55 and a moving mandrel 65) that are provided between an extraction unit (10) and a fixed unit (illustrated by an optical fiber catcher (70)) and that are arranged so as to be offset from each other in the longitudinal direction of the optical fiber (F). The method comprises the following steps: fixing an optical fiber extracted from an extraction part to a fixing part without clamping adjacent mandrels; a bending step in which the moving mandrel is moved to the forward position so that the optical fiber is bent at a predetermined angle in the longitudinal direction of the optical fiber by sandwiching the optical fiber by the adjacent mandrels, and the optical fiber is bent; and determining the bending loss of the optical fiber in a state in which the optical fiber is bent. 一种光纤的弯曲损耗测定方法，其使用设置于抽出部(10)和固定部