PRODUCTION OF OPTICAL FIBER

摘要

PURPOSE:To suppress the generation of bending in a free state at the connecting ends of spun optical fibers, to expedite and facilitate the operation to connect the optical fibers and to improve the connecting system thereof by grinding or washing with detergent the preform surface prior to spinning. CONSTITUTION:The preform surface on which foreign matter is physically or chemically stuck is removed together with the foreign matter by grinding the entire surface of the preform. The foreign matter sticking to the preform surface is otherwise removed by washing the entire surface thereof. As a result, the preform to be subjected to spinning is made into the state that the foreign matter is not stuck to its surface. The heterogeneity of the optical fiber by the foreign matter sticking thereto is thus eliminated and the bending at the front end of the optical fiber occurring in the heterogeneity is prevented. The operation to connect the optical fibers in fusion splicing of the optical fibers is expedited and facilitated and the transmission efficiency of the juncture is improved.