Prediction method of reflection rate of silica material modified by Mg and Ca element doping

Abstract

The invention discloses a prediction method of the reflection rate of a silica material modified by Mg and Ca element doping. The method comprises the steps that S1, doping is conducted on the SiO2 material by selecting Mg and Ca elements to construct multiple SiO2 element difference models doped with different elements; S2, molecular dynamics simulation and structural optimization are conducted on the SiO2 element difference models to obtain the best element doping variety; S3, different doping proportions of the Mg and Ca elements in the SiO2 material are selected to construct multiple SiO2proportioning difference models with different doping proportions; S4, structural optimization is conducted on the SiO2 proportioning difference models through simulation optimization software, lattice parameters, dielectric constants and binding state density maps of the SiO2 proportioning difference models are obtained according to the SiO2 element difference models, and the optimal element doping proportion is obtained. The method has the advantages that the computation is rapid, the result is accurate, an experiment result can be verified and analyzed, and theoretical guides can be provided for the selection and proportioning of the SiO2 doped elements.

Description

technical field [0001] The invention relates to the field of optical fiber and cable, in particular to a kind of Mg, Ca element doped modified SiO 2 Methods for Predicting the Refractive Index of Materials. Background technique [0002] Optical fiber is a medium for transmitting light beams, consisting of a core layer, a cladding layer and a coating layer, and is widely used in the communication industry. The core part of the optical fiber is a high-purity glass with a higher inner refractive index and a glass cladding with a lower outer refractive index. [0003] China provides the main production capacity of optical fiber and cable in the world. From 2010 to 2017, the compound growth rates of global optical fiber production and China's optical fiber production were 14.39% and 23.97%, respectively. In the future, as smart cities, driverless cars, electronic health, Internet of Things and other application scenarios are driving new digital revolutions, optical fiber The m...

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Problems solved by technology

[0006] However, it is difficult to determine SiO in the existing technology 2 The optimal ratio of material doping elements, so a method for evaluating and predicting the refractive index and electronic properties after doping improvement is established. For SiO 2 The preparation and development of fiber optic cable materials is particularly important

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