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A multi-beam splitter

A beam splitter and multi-beam technology, applied in the field of lasers, can solve the problems of complex multi-beam beam splitting structure and limited beam splitting ability, and achieve the effects of lowering the production cost, improving the yield rate and simplifying the structure.

Active Publication Date: 2017-06-27
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a multi-beam beam splitter, the purpose of which is to provide a beam splitting method based on reflection, which can evenly divide the beam to be split into multiple beams, thereby solving the problem of At present, the technical problems of complex multi-beam splitting structure and limited splitting ability

Method used

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Effect test

Embodiment 1

[0066] The multi-beam splitter provided by the present invention, such as figure 1 (a). The cross section of the optical waveguide is a square, that is, an equilateral polygon with the number of sides L=4. The optical waveguide is a solid optical waveguide, and both ends of the optical waveguide are coated with high antireflection films. During operation, the beam to be split is at an acute angle with the main axis of the optical waveguide, and is incident from one end of the optical waveguide. The incident angle of the incident light beam on the side surface is greater than the total reflection angle, so that total reflection is formed on the side surface of the optical waveguide.

[0067] The beam is reflected multiple times in the multi-beam splitter, passes through the beam splitter in a spiral shape, exits from the other end of the beam splitter, and is evenly divided into multiple parts, such as figure 1 (b) shown.

[0068] The number of sides of the cross section of...

Embodiment 2

[0073] The multi-beam splitter provided by the present invention, such as figure 2 (a). The cross section of the optical waveguide is a regular heptagon, that is, L=7, the optical waveguide is a hollow optical waveguide, and the inner wall of the optical waveguide is coated with a total reflection film.

[0074] When working, the beam to be split is at an acute angle with the main axis of the optical waveguide, and is incident from one end of the optical waveguide. The light beam after starting is reflected multiple times on different sides of the optical waveguide in the interior of the optical waveguide. Since the inner wall of the optical waveguide is coated with a total reflection film, it can be approximated that the light beam is completely reflected.

[0075] The beam is reflected multiple times in the multi-beam splitter, passes through the beam splitter in a spiral shape, exits from the other end of the beam splitter, and is evenly divided into multiple beams, such ...

Embodiment 3

[0081] Applying the multi-beam splitter beam splitting method provided by the present invention, the multi-beam beam splitter is such as figure 1 As shown in (a), it is a cylindrical optical waveguide, and the cross-section of the optical waveguide is a square, that is, an equilateral polygon with the number of sides L=4. The optical waveguide is a solid optical waveguide, and both ends of the optical waveguide are coated with high antireflection films.

[0082] During operation, the beam to be split is at an acute angle with the main axis of the optical waveguide, and is incident from one end of the optical waveguide. The incident angle of the incident light beam on the side surface is greater than the total reflection angle, so that total reflection is formed on the side surface of the optical waveguide.

[0083] The light beam is reflected multiple times in the multi-beam splitter, passes through the beam splitter in a spiral shape, exits from the other end of the beam spl...

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Abstract

The invention discloses a multi-beam splitter. The multi-beam splitter is characterized in that the multi-beam splitter is a cylindrical optical waveguide, the cross section of the optical waveguide is an equilateral polygon, and the number of sides is L; in work, an angle formed by a beam to be split and a main shaft of the optical waveguide is an acute angle, the beam enters from one end of the optical waveguide, the entering beam is fully reflected multiple times through different side faces of the optical waveguide in the optical waveguide, and finally the beam is evenly split into multiple sub beams outgoing from the other end of the optical waveguide. The multi-beam splitter is simple in structure, even in split beam, particularly capable of achieving even beam splits of odd number parts, small in optical loss and capable of being reused and applied to the fields of optical communication, optical detection and the like.

Description

technical field [0001] The invention belongs to the field of laser technology, and more particularly, relates to a multi-beam splitter. Background technique [0002] With the rapid development of optoelectronic technology, beam splitters have been widely used in optical communication, optical information processing, industrial inspection, high-energy laser processing and other fields to realize optical power distribution, multi-channel transmission and sampling. At the same time, in the application field of multi-beam interference, because the sub-beams after splitting have the characteristics of coherence, it is beneficial to realize the spatial laser interference field (optical lattice) and become a new technology for the preparation of photonic crystals or optical microstructure devices. The extensive attention of the foreign scientific research team. Therefore, the beam splitter is a core device in the field of optoelectronic technology. [0003] At present, according ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/125
Inventor 朱广志朱晓朱长虹黄彦王海林郭飞
Owner HUAZHONG UNIV OF SCI & TECH
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