Method for improving transmission capacity of optical fiber

A technology of optical fiber transmission and optical fiber, which is applied in the direction of optical fiber transmission, optics, optical components, etc., and can solve problems such as cost, power consumption, capacity expansion, and capacity limitation

Active Publication Date: 2022-05-31
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

However, in the next decade or so, more and more fibers in actual networks will reach their capacity limits
[0006] Therefore, for all network operators, keeping up with the ever-increasing demand for data traf...

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  • Method for improving transmission capacity of optical fiber
  • Method for improving transmission capacity of optical fiber
  • Method for improving transmission capacity of optical fiber

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Embodiment Construction

[0016] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0017] like figure 1 As shown, the specific steps for establishing a theoretical simulation system are: establishing a simulation model for the transmission of cylindrical vector vortex beam and its spin angular momentum in a fiber medium, and selecting single-mode fiber, ring fiber and few-mode fiber suitable for transmission at a wavelength of 633 nm , based on the generalized Huygens Fresnel principle and the unified theory of coherent polarization, the analytical expressions of the cross-spectral density matrix elements of the cylindrical vector vortex beam...

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Abstract

The invention belongs to the technical field of optical fiber transmission, and adopts the specific technical scheme that the method for improving the optical fiber transmission capacity comprises the following steps: establishing a theoretical simulation system and an experimental verification system, and obtaining optical fiber transmission light field distribution and spin angular momentum distribution through the theoretical simulation system; optical fiber transmission light field distribution and spin angular momentum distribution are obtained through an experimental verification system, and transmission characteristics of column vector vortex beams with different topological charges or different orders and spin angular momentum thereof in a single-mode fiber, an annular fiber and a few-mode fiber are researched by adopting theoretical analysis and building an optical fiber coupling transmission system. According to the method, the optical field distribution and the spin angular momentum distribution of the cylindrical vector vortex light beams transmitted in three optical fibers are verified, an experiment system is improved, the optical field distribution and the spin angular momentum distribution are detected at the same time, the transmission capacity of the optical fibers is increased, and the method has great research significance in research of long-distance optical communication and big data optical interconnection.

Description

technical field [0001] The invention belongs to the technical field of optical fiber transmission, and in particular relates to a method for improving optical fiber transmission capacity. Background technique [0002] Uncertainties in phase or polarization in a singular beam cause zero amplitude at the center of the beam, a point known as an optical singularity. The vortex light field is a ring-shaped light field distribution in shape, and each photon in the beam has orbital angular momentum and a helical wavefront phase. In the field of ultra-large-capacity optical interconnection communication links, vortex beams have promoted the development of a number of major application technologies. Taking advantage of the mutual orthogonality of vortex beams with different topological charges, vortex beams with different topological charges can be used as independent channels at the same time. Transmission of information, thereby increasing channel capacity in free space and fiber ...

Claims

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Application Information

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IPC IPC(8): G02B27/00G02B27/28H04B10/25
CPCG02B27/0012G02B27/286H04B10/25Y02E60/00
Inventor 李晋红尹晓金赵紫越
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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