优质光纤工艺有:改进的化学气相沉积法(MCVD)、气相轴向沉积法(VAD)、等离子体化学气相沉积法(PCVD)及外气相沉积法(OVD)四种. 要提高光纤制造工艺水平,关键是提高石英坯棒的沉积速率和增大坯棒的直径.关于OVD法,英国标准电信实验室宣称,其沉积速率已提高了三倍,并拉出20公里单模光纤的坯棒.1984年初,康宁公司用该法也制成能拉50公里优质单模光纤的坯棒,水份 High-quality optical fiber processes include: improved MCVD, VAD, PCVD and OVD 4. To improve the optical fiber manufacturing process , The key is to increase the deposition rate of the quartz billet and increase the diameter of the billet In the case of the OVD method, the British Standards Telecommunications Laboratory asserted that its deposition rate has tripled and that the green rod of a 20 km single-mode fiber has been pulled out. In early 1984, Corning companies also made with the law can pull 50 km high-quality single-mode fiber blank rods, water