Optical fiber preform one-time drawing process simulation method and device

Abstract

The embodiment of the invention provides an optical fiber preform one-time drawing process simulation method and device, and belongs to the technical field of optical fiber preforms. The method comprises the following steps: acquiring geometrical parameters and material parameters of an optical fiber preform; constructing a geometric simulation model of the optical fiber preform according to the geometric parameters; performing coupling transient simulation calculation on each physical field in the primary drawing process of the optical fiber preform according to the material parameters; and in response to the selection instruction, performing visualization processing on the calculation result according to the selection instruction. According to the invention, coupling transient simulationcalculation is carried out on each physical field in a primary drawing process of the optical fiber preform based on an optical fiber preform geometric model, so that parameters such as fluid velocity distribution, temperature distribution, pressure distribution, spatial point necking amount, rod diameter value after drawing and the like of the optical fiber preform in the drawing process are obtained and can be selectively visualized; and support is provided for optimization of one-time drawing process parameters of the optical fiber preform, the field test cost is effectively reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of optical fiber preforms, in particular to a simulation method for a primary drawing process of an optical fiber preform and a simulation device for a primary drawing process of an optical fiber preform. Background technique [0002] Optical fiber preform is a quartz glass rod with a core and cladding structure used to draw optical fibers and whose radial refractive index distribution meets the requirements of optical fiber communication transmission. become. [0003] The manufacture of optical fiber preforms has extremely high requirements for its production process and technology, and requires a large amount of capital investment. Since optical fiber production involves complex physical and chemical reaction processes, it takes a long time (nearly 20 production processes are required from the beginning of production to the final product inspection, The average production time for each product is 2 weeks)...

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Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to solve the problem of verifying the quality of the optical fiber in the prior art only after the optical fiber preform is drawn and formed by performing coupling simulation calculations on various physical fields in the primary stretching process of the optical fiber preform, resulting in Adjust the problem of low efficiency

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