A Multiphysics Simulation Modeling Method for Optical Fiber Attenuation Characteristics in Oplc Cables

Abstract

The invention discloses a multi-physical field simulation modeling method for optical fiber attenuation characteristics in an OPLC cable. The method includes steps: firstly, carry out geometric modeling on OPLC; secondly, select materials and material parameters corresponding to each structure of OPLC; thirdly, set finite element solution conditions, set boundaries of current field, solid heat transfer field, and solid mechanical field Conditions; at the same time, the section of the OPLC cable is divided into free triangular meshes and swept, and then the coupling calculation is performed; then, the temperature field distribution and strain distribution of the OPLC are obtained; finally, the influence of OPLC on the temperature and strain of the optical fiber is brought into the optical fiber In the attenuation simulation, the attenuation of the optical fiber in the OPLC cable is obtained. The multi-physical field coupling simulation based on the finite element method of the present invention makes it easier to obtain the attenuation characteristics of the optical fiber in the OPLC cable, which is affected by the current, temperature distribution, and strain during the operation of the OPLC cable, and the obtained optical fiber attenuation results are more accurate. The study of attenuation has important guiding significance.

Description

technical field [0001] The invention belongs to the technical field of optical fiber composite low-voltage cable OPLC, and in particular relates to a multi-physical field simulation modeling method for optical fiber attenuation characteristics in an OPLC cable. Background technique [0002] OPLC is a cable composed of an insulated core and an optical transmission unit with the ability to transmit electric energy and optical communication. It can provide power and information transmission at the same time. It is suitable for power projects with a rated voltage of 0.6 / 1 (1.2) kV and below. . OPLC enables the complex engineering of multiple lines such as electric wires, network cables, telephone lines, and cable TV lines that originally needed to be laid into an integrated construction, realizing the integration of four networks, which not only simplifies the installation process, but also greatly saves line resources and pipelines resource. At the same time, it has the advan...

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Problems solved by technology

At present, there have been studies on the electrothermal coupling analysis of cables, but for the strain generated by the interaction in the cable, and the influence of thermal field and strain on the transmission attenuation of the optical fiber in the OPLC cable, the electrothermal coupling analysis cannot obtain results.

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