Method for improving production efficiency of optical fiber preform

The invention discloses a method for improving production efficiency of an optical fiber preform, which belongs to optical communication technology. As the existing OVD depositing technology has smallinitial preform diameter in the initial depositing process, which causes the contact area with dust and flame to be less and the deposition rate of the dust on the preform to be low, the radical increasing of the optical fiber preform is very slow. The method for improving production efficiency of the optical fiber preform is an improvement on the structure of a burner when using the OVD technique to prepare the optical fiber preform, and quickens the transverse moving speed in the initial depositing process, increases the burning air flux, improves the flame temperature, enlarges the temperature difference between the dust grains and the surface of the preform, and increases the thermophoresis power of particles to lead the dust particles to be more quickly and effectively stuck on the surface of the optical fib