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A two-dimensional independently continuously adjustable all-optical optical path control method and device thereof

A technology of a control device and a control method, which is applied in the optical field, can solve the problems of inability to separate and independently adjust, and the realization conditions of all-optical optical path control are harsh, and achieve the effect of convenient and continuous adjustment.

Active Publication Date: 2022-07-01
SOUTH CHINA NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These mechanisms are largely limited by the medium type, boundary conditions, refractive index distribution, etc., making the realization of all-optical optical path control more demanding.
Dimensionally, previously proposed mechanisms either only regulate in one dimension, or do not regulate separately and independently in two transverse dimensions

Method used

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  • A two-dimensional independently continuously adjustable all-optical optical path control method and device thereof
  • A two-dimensional independently continuously adjustable all-optical optical path control method and device thereof
  • A two-dimensional independently continuously adjustable all-optical optical path control method and device thereof

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Embodiment 1

[0020] The two-dimensional independent and continuously adjustable all-optical optical path control method of the present invention comprises the following steps:

[0021] Step 1, generating a fundamental mode Gaussian beam and a (0,1) mode Laguerre Gaussian beam with the same polarization, the same frequency, and the same transmission direction;

[0022] In step 2, the generated fundamental mode Gaussian beam and the (0,1) mode Laguerre Gaussian beam are superimposed concentrically and coherently on the incident surface of the nonlinear medium;

[0023] Step 3: Adjust the magnitude and direction of the deviation of the center of gravity of the composite beam in the nonlinear medium from the initial position by adjusting the proportional coefficient b and the phase difference δ of the two beams, thereby realizing two-dimensional independent and continuously adjustable all-optical optical path control.

[0024] Its physical basis is the two-dimensional independently continuousl...

Embodiment 2

[0039] like figure 1 As shown in the figure, a two-dimensional independent and continuously adjustable all-optical optical path control device includes a laser light source 1, a beam splitter 2, b beam splitter 11, a reflector 6, b reflector 5, and a vortex phase plate 3 , phase retarder 4, a attenuation plate 8, b attenuation plate 7, a beam reducer 10, b beam reducer 9, non-linear volume medium 12, wherein:

[0040] The initial fundamental mode Gaussian beam 13 emitted by the laser light source 1 is divided into two beams by a beam splitter 2 , one of which remains unchanged and is still the fundamental mode Gaussian beam 15 , and the other beam passes through the vortex phase plate 3 and then changes into two beams. into a (0,1) mode Laguerre Gaussian beam 14 .

[0041] The fundamental mode Gaussian beam 15 enters the a beam reducer 10 through the phase retarder 4, the a mirror 6, and the a attenuation plate 8 in turn, and the (0, 1) mode Laguerre Gaussian beam 14 is atten...

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Abstract

The invention relates to the technical field of optics, in particular to a two-dimensional, independently and continuously adjustable all-optical optical path control method and device thereof. The physical basis of the present invention is the two-dimensional independently continuously adjustable lateral momentum in the composite beam. A fundamental mode Gaussian beam and a (0,1) mode Laguerre Gaussian beam with the same polarization, the same frequency and the same transmission direction are superimposed concentrically and coherently on the incident surface of the nonlinear medium to form a composite beam. When transmitting in a nonlinear medium, the magnitude and direction of the center of gravity of the composite beam deviating from the initial position can be independently and continuously adjusted by the proportionality coefficient b and the phase difference δ of the two combined beams, thereby realizing an all-optical optical path that can be independently and continuously adjusted in two dimensions. control. The present invention can conveniently and continuously adjust the deviation of the optical path in the two dimensions of size and direction.

Description

technical field [0001] The invention relates to the technical field of optics, in particular to a two-dimensional, independently and continuously adjustable all-optical optical path control method and device thereof. Background technique [0002] All-optical optical path control has important applications in all-optical information processing fields such as optical routing, optical switches, and optical logic gates. Therefore, researchers are devoted to developing various all-optical optical path control techniques. Unlike electrons, photons cannot directly interact with each other, and the interaction between light and light can only be achieved indirectly through means such as nonlinear optical effects. Some all-optical optical path control mechanisms have been discovered in the past, such as soliton interactions, boundary lateral constraints, linear refractive index profiles interacting with nonlinear responses, and so on. These mechanisms are largely limited by the med...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/35
CPCG02F1/3501G02F1/3515G02F1/3503
Inventor 陆大全陈娟蔡桂琴胡巍
Owner SOUTH CHINA NORMAL UNIVERSITY