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Space division multiplexing and demultiplexing method and system based on self-acceleration plane wave light beam

A space division multiplexing and plane wave technology, applied in the field of space division multiplexing and demultiplexing methods and systems, to achieve the effects of improving communication capacity and space utilization, and increasing the number of channels

Active Publication Date: 2020-10-09
SUN YAT SEN UNIV
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Problems solved by technology

The existing free-space optical communication multiplexing / demultiplexing link relies on multiple phase adjustments, and most of them have complex optical systems, which not only have extremely high requirements for alignment accuracy, but also produce unsatisfactory conditions due to the light field passing through multiple optical elements. negligible energy loss

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  • Space division multiplexing and demultiplexing method and system based on self-acceleration plane wave light beam
  • Space division multiplexing and demultiplexing method and system based on self-acceleration plane wave light beam
  • Space division multiplexing and demultiplexing method and system based on self-acceleration plane wave light beam

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Embodiment Construction

[0034] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For the step numbers in the following embodiments, it is only set for the convenience of illustration and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art sexual adjustment.

[0035] In order to improve the resource utilization rate of free-space curved beam communication, the present invention uses orthogonal self-accelerating plane wave beams as multiplexed spatial modes, and efficiently realizes modes of the same mode family through reasonable configuration of phase modulation modules and Fourier transform modules generation, multiplexing and demultiplexing. While retaining the flexibility and self-healing properties of self-accelerating beams, increasing the number of modes for transmi...

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Abstract

The invention discloses a space division multiplexing and demultiplexing method based on a self-acceleration plane wave light beam, and the method comprises the steps: carrying out the beam expansionof a light field emitted from an optical fiber, carrying out the spatial phase modulation and one-dimensional spatial Fourier transform on the light field subjected to beam expansion so as to obtain aself-acceleration plane wave light beam mode; carrying out one-dimensional spatial Fourier transform on the self-acceleration plane wave beam mode, then carrying out spatial phase demodulation, and carrying out two-dimensional spatial Fourier transform on the demodulated light field to obtain a separated light field. The system comprises a multiplexing module and a demultiplexing module. According to the invention, the communication capacity and the space utilization rate can be improved. The space division multiplexing and demultiplexing method and system based on the self-acceleration planewave light beam can be widely applied to the field of optical communication application.

Description

technical field [0001] The invention relates to the field of optical communication applications, in particular to a method and system for space division multiplexing and demultiplexing based on self-accelerating plane wave light beams. Background technique [0002] Since the Airy beam was first observed in an experiment in 2007, the self-accelerating beam represented by it has attracted the attention of optical researchers due to its bendable and self-healing properties, and has achieved practical applications in many occasions. When the self-accelerating beam is used as a carrier in free-space optical communication, its bending can take advantage of the flexibility to bypass obstacles, and its self-healing property shows the ability to resist interference, so it can adapt to different free-space scenarios. In the existing related research, the signal transmission is limited to a single channel. Compared with other existing free space optical communications, the communicatio...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/2581H04B10/548H04B10/25H04J14/04
CPCH04B10/2581H04B10/548H04J14/04
Inventor 陈钰杰林树青闻远辉余思远
Owner SUN YAT SEN UNIV
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