Neural network-based optical fiber vortex mode engineering method

Abstract

The invention discloses an optical fiber vortex mode engineering method based on a neural network, and belongs to the field of optical fiber communication. The optical fiber vortex mode performance parameters are acquired corresponding to the vortex ring optical fiber structure parameters through numerical simulation. A neural network is utilized to construct a complex function relation between optical fiber vortex mode performance parameters and vortex ring optical fiber structure parameters, wherein the optical fiber vortex mode performance parameters serve as input, and the vortex ring optical fiber structure parameters serve as output, thereby training, testing and verifying the neural network model. Finally, the target optical fiber vortex mode performance parameters are inputted into the neural network model to predict required vortex ring optical fiber structure parameters, thereby realizing optical fiber vortex mode engineering based on the neural network. The limitation of a traditional vortex optical fiber design method and the bottleneck of vortex mode regulation and control are broken through, an optical fiber vortex mode project with a brand new thought is provided for similar optical fiber dispersion engineering, the optical fiber vortex mode engineering has a wide application prospect in the field of vortex mode space division multiplexing systems, and the blank of related technical fields is filled.

Description

technical field [0001] The invention belongs to the field of optical fiber communication, and more specifically, is similar to optical fiber dispersion engineering in optical fiber communication technology, and relates to a method for optical fiber vortex mode engineering based on a neural network. Background technique [0002] The wide application of emerging high-speed data communication services has produced huge transmission data, which puts forward higher capacity requirements for future communication technologies. In recent years, wavelength division multiplexing, polarization multiplexing, time division multiplexing, and space division multiplexing technologies have been widely studied to solve the channel capacity crisis of the transmission system. Among them, space division multiplexing improves channel capacity by increasing the number of spatial parallel channels, which still needs to be further developed and utilized. Optical vortex mode multiplexing technology ...

AI Technical Summary

Problems solved by technology

[0003] The traditional optical fiber design method is based on the calculation method of parameter sweep, which is very time-consuming and the fiber structure that can be realized is limited.

Especially for complex fiber designs with multi-parameter optimization, very fine grids are required to achieve high-precision scanning, which makes the difficulty of traditional design methods significantly increased, and each time a fiber with different target mode performance parameters is designed, parameter scanning needs to be performed again , very time consuming

The design of vortex ring fiber needs to optimize the structural parameters of each ring in the ring core to achieve the target optical vortex mode performance. The optimized parameters include the radius of the innermost ring core, the width of each ring, and the refractive index distribution of each ring. etc., the number of optimized parameters increases with the number of layers, and the difficulty and complexity of the design also increase significantly

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