Anti-vibration method for optical fiber in drawing optical fiber and drawing device therefor

Abstract

Abstract PURPOSE:To reduce vibration of optical fiber between a parent material and a guiding means to the least extent in the stage for guiding an optical fiber parent material during heating, wire-drawing, and cladding, by providing a means for adjusting the distance between the parent material and the guiding means. CONSTITUTION:An optical fiber parent material 10 is held vertically and transferred downward at a fixed speed, drawn by heating in a wire drawing furnace 14, and the optical fiber 16 suspended downward is transferred to a primary cladding device 20 after passing the fiber through a fiber size measuring device 18, where the drawn optical fiber is clad with a plastic material. The fiber is then passed between a capstan 24 and an idle roller 26 through a drying furnace 22. In this stage, a fixed tension is given to a tension roller 30, and the fiber is wound on a winding drum 32. A pinion 46 provided to a capstan guide 34 is then revolved, and a block 40 is moved upward or downward along a groove 38 of the capstan guide 34 to adjust the distance between the lowermost end of the parent material 10 and the capstan 24 so as to reduce the degree of vibration of the optical fiber 16 to the least extent. By this method, the dia. and the clad of an optical fiber 16 are regulated to fixed values.

Inventors

• 👤 Hiroo Matsuda
• 👤 松田　裕男
• 👤 Masaharu Mogi
• 👤 昌春 茂木

Bibliographic Details