| abstract |
PURPOSE: To carry out the high-speed spinning of an optical fiber having high reliability using a very simple apparatus in combination with a high-speed spinning apparatus, by passing an optical fiber immediately after spinning through an inorganic raw material gas, thereby reacting the gas at the surface of the fiber taking advantage of the remaining heat of the fiber. n CONSTITUTION: He gas (carrier gas) 11 is bubbled in liquid TiCl 4 13 stored in the bubbler 12, and the TiCl 4 vapor 14 is blasted through the nozzle 15 to the surface of the optical fiber 18 having a definite diameter immediately after being spun from the optical fiber preform 17 with the spinning furnace 16. The vapor 14 is decomposed at the surface of the optical fiber by the remaining heat of spinning, oxidized to TiO 2 , and deposited to the surface of the fiber 18 to form a coating layer. The optical fiber 18 cooled by the endothermic reaction is passed through the die 2 containing the thermosetting resin 19 for coating. The resin 19 attached to the surface of the optical fiber 18 is baked, and cured in the furnace 21. n COPYRIGHT: (C)1982,JPO&Japio |