Multi-parameter optimized orbital angular momentum erbium-doped optical fiber

Abstract

The invention discloses a multi-parameter optimized orbital angular momentum erbium-doped optical fiber, and belongs to the field of optical fiber communication. The multi-parameter optimized orbital angular momentum erbium-doped optical fiber includes an annular fiber core region, an erbium-doped region, a central region and a cladding. The annular fiber core area is of a multi-layer annular fiber core structure, the erbium-doped area is a double-layer annular erbium-doped area composed of the inner side and the outer side of the annular fiber core area, and the refractive index of the center area and the refractive index of the cladding are lower than that of the annular fiber core area. Multi-parameter optimization is carried out on optical fiber structure parameters of the orbital angular momentum erbium-doped optical fiber by using a machine learning method to obtain mode performance parameters of a specific target. Meanwhile, the orbital angular momentum Er-doped optical fiber can be expanded into a multi-core orbital angular momentum Er-doped optical fiber which comprises a plurality of fiber cores. The multi-parameter optimized orbital angular momentum erbium-doped optical fiber solves the problem of multi-parameter optimization design of the orbital angular momentum erbium-doped fiber, has application prospects in the fields of orbital angular momentum fiber amplifiers, lasers and optical communication, and fills the blank in the related technical fields.

Description

technical field [0001] The invention belongs to the field of optical fiber communication, and more specifically relates to a multi-parameter optimized orbital angular momentum erbium-doped optical fiber. Background technique [0002] With the advent of the era of big data and 5G, the growth rate of data traffic demand has greatly exceeded the development speed of existing optical communication technologies, such as multiplexing technologies based on wavelength / frequency, polarization and time physical dimensions, and different advanced advanced modulations format technology, etc. To solve this problem, space-division multiplexing (SDM) based on the physical dimension of space, as a promising technology, has been widely used in recent years to solve the capacity limit bottleneck of existing optical communication technologies. As an important branch of space division multiplexing technology, Orbital Angular Momentum Mode Multiplexing (OAM-DM) provides a new idea for effective...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects of the prior art, the present invention provides a multi-parameter optimized orbital angular momentum erbium-doped fiber, which aims to solve the problems existing in the orbital angular momentum mode multiplexing optical fiber communication of the existing erbium-doped fiber technology, especially to solve the problem of optical fiber Insufficient design flexibility and limited optimization of fiber structure parameters and mode performance parameters

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