New fabrication technology of SiO2 optical fiber preform

This paper describes the preparation technology development of optical fiber preform, and gives a comprehensive analysis to the development of domestic and international fiber optic industry. And in this paper, the technical process, preparation methods, principles and difficulties on SiO2 optical fiber preform by sol-gel were also analyzed. This paper provides a theoretical basis for manufacture of optical fiber preform by sol-gel method, and finally future research directions by this method are outlined.