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Light beam array alignment device and discrimination method for alignment of 2*2 emitting light source

A technology of arrayed beams and alignment devices, which is applied in optics, optical components, instruments, etc., and can solve problems such as the drift characteristics of arrayed beams that cannot be aligned

Active Publication Date: 2018-10-09
XIAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Another object of the present invention is to provide a method for judging the alignment of a 2×2 emitting light source based on a four-quadrant detector, which can solve the problem of misalignment caused by the drift characteristics of the array beam after transmission

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  • Light beam array alignment device and discrimination method for alignment of 2*2 emitting light source
  • Light beam array alignment device and discrimination method for alignment of 2*2 emitting light source
  • Light beam array alignment device and discrimination method for alignment of 2*2 emitting light source

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0041] The invention provides an array beam alignment device, such as figure 2 As shown, it includes a 2×2 array beam 1, a lens 2, a four-quadrant detector 3 and a coupling 9. The 2×2 array beam 1 is focused on the photosensitive surface of the four-quadrant detector 3 after passing through the lens 2, and the four-quadrant detector The output end of the detector 3 is connected with an amplifier circuit 4, a filter device 5, a signal processing unit 6 and a two-dimensional motor 8 in sequence, the four-quadrant detector 3 is placed on the two-dimensional motor 8 through the support of the coupling 9, and the signal processing unit 6 A computer 7 is also connected, and the signal processing unit 6 is controlled by the computer 7 . The signal processing unit 6 used is the ARM processor of STM32F103ZET6.

[0042] The present invention also pr...

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Abstract

The invention discloses a light beam array aligning device, and the device comprises a 2*2 light beam array, a lens, a four-quadrant detector, an amplifying circuit, a filtering device, a signal processing unit, a computer, a two-dimensional motor and a shaft coupler. A discrimination method, employing the above device, for the alignment of the 2*2 emitting light source specifically includes the steps: enabling the 2*2 emitting light source to be focused onto the photosensitive surface of the four-quadrant detector through the lens; converting a received optical signal into a four-way electrical signal through the four-quadrant detector; carrying out a series of processing operations of the obtained four-way electrical signal, and then transmitting the signal to the signal processing unit;carrying gout the comparison analysis of the amplified four-way electrical signal in the signal processing unit, and judging whether the light beams are aligned or not according to the intensity of the energy of the four-way electrical signal; controlling the two-dimensional motor to operate according to a judgment result; enabling the two-dimensional motor to drive the four-quadrant detector tooperate, so as to adjust the position of the light beam array and to realize the alignment of the 2*2 emitting light source. The device solves an alignment problem of the light beam array.

Description

technical field [0001] The invention belongs to the technical field of wireless laser communication, and in particular relates to a base array beam alignment device, and also relates to a judging method for aligning 2×2 emitting light sources by using the array beam alignment device. Background technique [0002] The wireless laser communication (Free-Space Optical communication, FSO) channel is dynamic and complex. When the laser is transmitted in the atmosphere, it is affected by atmospheric turbulence, resulting in atmospheric turbulence effects such as beam jitter, drift, and scintillation. Assuming that the detection device cannot detect the position change of the light spot in real time to drive the position adjustment of the receiving device, the communication link may be interrupted, thereby affecting the performance of the communication system. Therefore, a set of beam real-time automatic alignment system is needed to adjust the transmitting beam so that the transmi...

Claims

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Application Information

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IPC IPC(8): G02B27/00
CPCG02B27/00
Inventor 柯熙政王姣
Owner XIAN UNIV OF TECH
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