WELDING CONNECTION METHOD OF OPTICAL FIBER

摘要

PURPOSE:To exclude error factors and improve the precision of welding connection by heating and shaping end surfaces of both optical fibers and then putting them in an abutting state, thrusting both optical fibers relatively while the end surface interval is zero, and heating the optical fibers throughout the abutting process and thrusting process. CONSTITUTION:The optical fiber end parts 7A and 7B are moved relatively to a shaping interval L by a specific extent in abutting directions after rough interval L1 is set, and then the optical fiber end surfaces 8A and 8B are heated and shaped by a couple of discharge electrodes 4M and 4N for about 0.1sec. The optical fiber end parts 7A and 7B are moved relatively in the abutting directions to abut on each other so that the end surface interval is zero, and then the optical fiber end parts 7A and 7B are heated again through the discharge electrodes 4M and 4N; and the thrusting of the end parts 7A and 7B is started synchronously or about 0.05sec later to make the welding connection.