A method and system for space division multiplexing and demultiplexing based on self-accelerating plane wave beams
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: 2021-11-19
SUN YAT SEN UNIV
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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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[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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The invention discloses a space division multiplexing and demultiplexing method based on a self-accelerating plane wave beam. Fourier transform to obtain the self-accelerating plane wave beam mode; the self-accelerating plane wave beam mode is subjected to one-dimensional spatial Fourier transform to perform spatial phase demodulation, and the demodulated light field is subjected to two-dimensional spatial Fourier transform to obtain The separated light field. The system includes: a multiplexing module and a demultiplexing module. By using the invention, the communication capacity and space utilization rate can be improved. As a space division multiplexing and demultiplexing method and system based on self-accelerating plane wave light beams, the present invention can be widely used in the field of optical communication applications.
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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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