Device for realizing dual-polarization Airy obstacle avoidance signal transmission based on single SLM spatial partition

A signal transmission, dual polarization technology, applied in the field of communication, can solve the problems of high system cost, unsatisfactory channel capacity, high price of spatial optical modulator, etc., to achieve the effect of increasing channel capacity and reducing cost

Active Publication Date: 2020-05-01
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

The price of the spatial light modulator is high. In a general Airy beam system, a spatial light modulator only

Method used

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  • Device for realizing dual-polarization Airy obstacle avoidance signal transmission based on single SLM spatial partition
  • Device for realizing dual-polarization Airy obstacle avoidance signal transmission based on single SLM spatial partition
  • Device for realizing dual-polarization Airy obstacle avoidance signal transmission based on single SLM spatial partition

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Embodiment Construction

[0024] The device for realizing dual-polarized Airy obstacle signal transmission based on a single SLM space partition of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0025] Such as figure 1 As shown, the device for realizing dual-polarized Airy obstacle signal transmission based on a single SLM space partition includes a transmitter, a spatial channel, and a receiver. Gaussian light with y polarization state.

[0026] The spatial channel includes a first mirror 6, a second mirror 7, a spatial light modulator 8, a third mirror 9, a fourth mirror 10, a first lens 11, a second lens 12, a first beam splitter 13, The second beam splitter 14, the first quadruple focal length imaging system 15, the second quadruple focal length imaging system 16, the beam combiner 17, the third collimator 18 and the computer 22, the spatial light modulator 8 is connected to the computer 22.

[0027] The x-...

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Abstract

The invention relates to a device for realizing dual-polarization Airy obstacle avoidance signal transmission based on single SLM spatial partition, and belongs to the field of communication. The waveform generator generates a signal and loads the signal to the Mach-Zehnder modulator; signals are transmitted in an optical carrier, divided into two beams of mutually perpendicular Gaussian light ina polarization state through a polarization beam splitter, enter a space channel through a collimator, enter an upper half area and a lower half area of an SLM respectively, are reflected by the SLM,penetrate through a lens and form Airy beams, and the two beams of Airy beams in the polarization state are coupled through a beam combiner and then are transmitted to a receiving end through an optical fiber. Two Airy beams are formed through only one spatial light modulator to realize obstacle-bypassing transmission, and signals are loaded on the Airy beams in a dual-polarization state through apolarization multiplexing technology, so that the channel capacity is doubled, and the system and signal transmission cost is reduced.

Description

technical field [0001] The invention belongs to the communication field, and relates to a device for realizing dual-polarization Airy obstacle signal transmission based on a single SLM space partition. Background technique [0002] Diffraction is a fundamental property of light beams, which can be used to explain all classical wave phenomena. Due to the existence of diffraction, the beam spot gradually becomes larger and the energy gradually diverges during the propagation of the beam. Therefore, in the early days of laser invention, people have begun to think about how to eliminate or counteract the diffraction effect. In nonlinear media, researchers have achieved the suppression of beam diffraction by using the self-focusing nonlinearity of the medium, that is, the formation mechanism of spatial optical solitons. This approach was proven experimentally several years ago. However, it is more desirable to realize non-diffraction beams in free space, and this requirement a...

Claims

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Application Information

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IPC IPC(8): H04B10/11H04B10/516G02B27/28G02B27/09
CPCG02B27/0927G02B27/0955G02B27/283H04B10/11H04B10/516
Inventor 刘博吴泳锋张丽佳渠松松赵立龙孙婷婷忻向军毛雅亚刘少鹏宋真真王俊锋哈特姜蕾
Owner NANJING UNIV OF INFORMATION SCI & TECH
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