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Vertical 90 degree spatial optical mixer

A spatial optical and vertical technology, applied in the field of optical communication, can solve the problems of immature technology and no molded products, and achieve the effect of a reliable spatial optical mixing device

Active Publication Date: 2018-06-26
CHANGCHUN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to its particularity, the spatial optical mixer used in the receiving system of spatial coherent laser communication is different from the optical mixer in optical fiber communication and microwave communication. The current technology is not mature, and there are no formed products at home and abroad.

Method used

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  • Vertical 90 degree spatial optical mixer

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Effect test

Embodiment Construction

[0016] As shown in Figure 1, the vertical type 90-degree spatial optical mixer of the present invention consists of a first crystal 7, a second crystal 14, a first polarizing beamsplitter prism 4, a second polarizing beamsplitting prism 16, and a first quarter-wave plate 5. The second quarter wave plate 8, the third quarter wave plate 10, the fourth quarter wave plate 12, the fifth quarter wave plate 13, the first half wave plate 6. The second half-wave plate 15, the first isosceles prism 9 and the second isosceles prism 11 are composed. After the signal light 17 and the local oscillator light 3 pass through the vertical 90-degree spatial optical mixer, the first output mixed coherent light 1, the second output mixed coherent light 2, and the third output mixed coherent light The coherent light 19 obtained by mixing the coherent light 18 and the fourth output is output through four ports.

[0017] The front and rear sides of the right end face of the first crystal 7 are bonde...

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Abstract

The invention relates to the field of optical communication and provides a vertical type 90-dgree spatial optical mixer. The mixer mainly comprises crystals (7, 14), polarization splitting prisms (4, 16), quarter-wave plates (5, 8, 10, 12, 13), half-wave plates (6, 15) and isosceles prisms (9, 11). Based on the crystalline double refraction splitting principle, the mixer realizes coherent mixing of signal light (17) and local oscillation light (3) and outputs four paths of coherent light (1, 2, 18, 19) after mixing. The vertical type 90-dgree spatial optical mixer is mainly applied to spatial coherent laser communication receiving system.

Description

technical field [0001] The invention relates to a vertical 90-degree spatial light mixer, which realizes coherent frequency mixing of signal light and local oscillator light. The invention is applied to a space coherent laser communication receiving system and belongs to the technical field of optical communication. Background technique [0002] Spatial coherent laser communication has high sensitivity, large communication capacity, and can be applied more flexibly by using multiple modulation methods. Space coherent laser communication, as a technology with great potential for interstellar high-rate information, has become a research hotspot at home and abroad. As the core component of the coherent laser communication receiving system, the optical mixer plays an even more important role. Optical mixers are currently mainly used in optical fiber communication and microwave communication, and the technology is relatively mature. Due to its particularity, the spatial optica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/28
CPCG02B27/283
Inventor 张磊郑阳刘宇郑建平
Owner CHANGCHUN UNIV OF SCI & TECH
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