Multi-light-beam phase perturbation apparatus and method

A phase disturbance, multi-beam technology, applied in the field of laser applications, to achieve the effects of various bending methods, compact system, and wide range of light waves

Pending Publication Date: 2018-06-01
长春新产业光电技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the problem that there are a large number of peaks and valleys in the output laser energy of the existing optical fiber, the purpose of the present invention is to provide a multi-beam phase perturbation device and method, which can eliminate energy peaks and valleys for multiple wavelengths and multiple beams of light at the same time, and meet the needs of lasers. The high-quality requirements of the light source; it couples multiple lasers into the multi-core fiber, which can make multiple lasers output simultaneously, and the efficiency of each laser is better than 95%; let at least one section of the multi-core fiber bend to achieve The dynamic modulation of the total reflection light in the multi-core fiber makes the laser mode in the fiber relatively evenly distributed. At the same time, the multi-core fiber is driven by the perturbation device to vibrate left and right or up and down, so that the phase of multiple beams changes accordingly, thereby eliminating Energy peaks and valleys in the output light field

Method used

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Embodiment 1

[0058] Embodiment 1: as figure 1 The selected multi-core optical fiber 1 is 3 bundled optical fibers with a core diameter of 200um, in which the length of the multi-core optical fiber 1 is 15m, the bending arc length is 16-17cm, the number of bending arc lengths is 16, and the end surface of the multi-core optical fiber 1 is coated with There are 400-700nm anti-reflection coating. The multi-core fiber 1 connector is an SMA905 connector. The disturber 2 is an electric platform that shakes up and down. The vibration amplitude of the perturbator 2 is 1mm; the perturbator 2 is equipped with a 24V DC power supply. The diameter of the plastic bobbin 3 is 10cm, and the quantity is 2, and the pressing sheet 4 is 2 polytetrafluoro sheets.

[0059] When in use, the 532nm laser, 589nm laser and 639nm laser are respectively coupled into the multi-core fiber 1, the multi-core fiber is three bundled fibers with a core diameter of 200um; the multi-core fiber 1 is wound along the winding a...

Embodiment 2

[0060] Embodiment 2: as figure 2 Shown is a device based on a plurality of optical waveguide interference elimination, including a multi-core optical fiber, a perturbator, and a winding shaft; it is characterized in that: the winding shaft is a cylindrical winding shaft, and the side of the winding shaft is provided with grooves in the direction perpendicular to the axis. The core fiber is wrapped in the groove along the winding shaft, and the disturber is fixed on the lower part of the winding shaft; the disturber is a vibration source that drives the multi-core fiber in the groove to shake up and down regularly, which indirectly drives the multi-core fiber to shake up and down.

Embodiment 3

[0061] Embodiment 3: as image 3 As shown, when in use, the 532nm laser, 589nm laser and 639nm laser are respectively coupled into the multi-core fiber 1, and the multi-core fiber is three bundled fibers with a core diameter of 200um; the multi-core fiber 1 is wound along the winding axis 3, Two winding shafts 3 are selected to make the multi-core optical fiber 1 produce a bent state, and the bending arc length is π times the radius of the winding shaft 3, so that the laser mode in the multi-core optical fiber 1 can be relatively evenly distributed; by being fixed on the winding shaft 3 The perturbator 2 at the lower part drives the fixed multi-core fiber 1 to vibrate up and down, so that the phases of the multiple beams change accordingly, so as to eliminate energy peaks and valleys at the output port of the multi-core fiber 1 .

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Abstract

The invention relates to a multi-light-beam phase perturbation apparatus and method. The multi-light-beam phase perturbation apparatus is characterized in that each winding shaft is a cylindrical winding shaft; a groove is formed in the side surface, in a direction perpendicular to a shaft, of each winding shaft; multiple-core optical fibers are wound in the groove around the winding shaft; a pressing sheet adopts an arch bridge shape; the multiple-core optical fibers are fixed on a perturbator by the pressing sheet; the perturbator is arranged between two winding shafts; and the perturbator adopts a vibration source to drive the multiple-core optical fibers fixed by the pressing sheet to shake left and right regularly. The multi-light-beam phase perturbation apparatus is simple in structure, capable of performing multi-wavelength and multi-light-beam optimization synchronously, high in optical energy utilization rate, without changing linewidth of a laser source and the output divergence angle of optical fibers, flexible in use, and low in manufacturing cost and manufacturing difficulty, and batch production can be realized.

Description

technical field [0001] The invention relates to a multi-beam phase perturbation device and method, belonging to the technical field of laser applications. Background technique [0002] Eyes are the main sensory organ for human beings to obtain information, and various displays based on different principles and technologies are the main presentation forms of information. As a display light source, laser has advantages incomparable to other light sources due to its good monochromaticity, directivity, high brightness, and rich wavelength spectrum. At present, limited by the optical power of laser diodes, fiber-optic coupling is generally used in high-lumen laser displays to integrate multiple collimated red, green, and blue laser diodes through fiber bundles to achieve high-power lighting. However, due to the laser beam propagating in the optical fiber, it will be divided into several laser beams with the same frequency, and they overlap in a certain area of ​​space, resulting...

Claims

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Application Information

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IPC IPC(8): H01S3/10
CPCH01S3/10053
Inventor 窦微陈晴任广胜王彦赵越肖辉东郑权邓岩
Owner 长春新产业光电技术有限公司
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