Far-field focusing capability improving method based on annular array Airy Gaussian beams
A ring array and Airy beam technology, which is applied in the fields of energy transmission, laser communication, and radar, can solve the problems of limited coverage area of Airy beam communication, insufficient transmitter equipment, and limited communication coverage, and achieve the effect of increasing the transmission rate
Active Publication Date: 2022-08-02
ZHEJIANG UNIV
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But there is also a disadvantage: for the annular array Airy beam, only one focal area will appear in the transmission path, and then the energy of the beam will be diffracted again, which means that the communication coverage of the annular array Airy beam is limited
When building an optical communication network in an emergency, it is possible to encounter the problem of limited coverage area of the ring array Airy beam communication caused by insufficient transmitter equipment
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[0048] The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.
[0049] The following describes the method and device for improving the far-field focusing ability based on the annular array of Airy Gaussian beams according to the embodiments of the present invention with reference to the accompanying drawings.
[0050] figure 1 A schematic flowchart of a method for improving far-field focusing ability based on a ring-array Airy Gaussian beam provided by an embodiment of the present invention.
[0051] like figure 1 As shown, the method for improving...
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The invention provides a far-field focusing capability improving method based on an annular array Airy-Gaussian beam, and the method comprises the steps: obtaining an Airy beam, modulating the Airy beam through a Gaussian diaphragm, and obtaining the Airy-Gaussian beam; uniformly distributing and arranging the plurality of Airy-Gaussian beams according to a first preset radius ring, and establishing a first ring array Airy-Gaussian beam model; uniformly distributing and arranging the plurality of Airy-Gaussian beams according to a second preset radius ring, and establishing a second ring array Airy-Gaussian beam model; performing nesting processing on the first annular array Airy Gaussian beam model and the second annular array Airy Gaussian beam model to establish a double-annular array Airy Gaussian beam theoretical model; the length of a far-field focusing interval is increased and the energy of a far-field focusing area is improved through a double-ring array Airy-Gaussian beam theoretical model. According to the invention, the laser communication transmission rate, the laser radar detection precision and the laser energy transfer efficiency can be effectively improved.
Description
technical field [0001] The invention belongs to the fields of laser communication, radar and energy transmission, and in particular relates to a method for increasing the length of a far-field focusing area and increasing the energy of the far-field focusing area by using a ring-shaped array of Airy Gaussian beams. Background technique [0002] The continuous advancement of science and technology has created some new scenarios that have never been seen before, such as the Internet of Vehicles, smart homes, and urban smart brains. Traditional wireless communication technologies have been unable to meet people's needs for high-speed, high-capacity, and high-bandwidth communications. In this context, free space optical communication came into being. It is a wireless communication technology that uses light beams to complete data transmission in communication channels in free space (air or vacuum). Compared with traditional radio frequency systems and optical fiber systems, fre...
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IPC IPC(8): G02B27/00H04B10/11H04B10/50
CPCG02B27/0012H04B10/11H04B10/503Y02D30/70
Inventor 许萌钟杰
Owner ZHEJIANG UNIV