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Method and device for mode and space optical switching

A space light, space position technology, applied in the field of optical communication and information optics

Active Publication Date: 2019-01-04
ZHONGTIAN COMM TECH CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In wavelength division multiplexing systems, wavelength selective switching has been widely used to realize information exchange, but in space division multiplexing systems, there are few switches with similar functions

Method used

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  • Method and device for mode and space optical switching
  • Method and device for mode and space optical switching
  • Method and device for mode and space optical switching

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Embodiment Construction

[0027] Space division multiplexing system includes free space communication system, optical fiber communication system and communication system of other transmission media. These systems can be space-division multiplexing systems based on mode-division multiplexing technology, including Gaussian beams (Gauss) in free space, orbital angular momentum (vortex) beams (OAM), Laguerre-Gaussian beams (LG), Eur Meter-Gaussian beams (HG), Bessel beams (Bessel), vector beams (Vector) and other spatial amplitude / phase / polarization modulated beams, eigenmodes (Eigenmodes), linear polarization modes (LP) and orbital angles in fibers Momentum mode (OAM), etc.; it can also be a space division multiplexing system based on core division multiplexing technology, which can be compatible with free space, single-mode fiber / few-mode / multi-mode-multi-core fiber, high-refractive index ring fiber / air Optical communication systems constructed by orbital angular momentum fibers such as core fibers / photo...

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Abstract

The invention discloses a mode and space light switching method and device. According to the method, multiple paths of input light fields realize mode light switching, space light switching and mode and space light simultaneous switching correspondingly through switching operations of a mode switching transfer function, a space switching transfer function and a mode and space switching transfer function. The device comprises an input module with N ports, an output module with N ports and a light switching module with N mode and space light switching units. Each mode and space light switching unit respectively performs a switching operation on one port of the input module, and a corresponding port of the output module outputs. The method is applicable to multiple paths of light fields which are different in spatial position arrangement and have the same or different light field modes, can be fully compatible with an optical communication system built by orbital angular momentum optical fibers such as free space single / few / multi-mode optical fibers, multi-core optical fiber, few / multimode-multicore optical fiber, and high-refractivity annular optical fibers / aircore optical fibers / photonic crystal optical fibers, and has compatibility.

Description

technical field [0001] The invention belongs to the field of optical communication and information optics, and relates to a method and device for mode and space light exchange. Background technique [0002] Against the background of economic globalization and the accelerated development of global informatization, Internet services have gradually become an important part of the modern service industry and an important driving force for world economic and social development. As the mainstream model of next-generation Internet services, cloud services mobilize various resources in the network to provide users with personalized, low-cost and efficient services, which will become an important development trend of the Internet in the future and will also become the core of the modern service industry. Cloud services are allowing the network to increasingly play the role of a distributed computer interface, and the network bandwidth and data processing capabilities required for thi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00
CPCG02B27/0012
Inventor 王健刘俊
Owner ZHONGTIAN COMM TECH CO LTD
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