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Vertical type 90-dgree spatial optical mixer

A space light, 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 reliable space light mixing device

Active Publication Date: 2015-11-18
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
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AI Technical Summary

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 type 90-dgree spatial optical mixer

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Effect test

Embodiment Construction

[0014] As shown in the figure, the vertical 90-degree spatial optical mixer of the present invention consists of crystal (7, 14), polarization beam splitter prism (4, 16), quarter wave plate (5, 8, 10, 12, 13) , a half-wave plate (6, 15) and an isosceles prism (9, 11). Signal light (17) and local oscillator light (3) are output through four ports (1), (2), (18) and (19) after passing through a vertical 90-degree spatial optical mixer.

[0015] The front and rear sides of the right end of the crystal (7) are bonded to the left end surface of the quarter wave plate (8) and the left end surface of the quarter wave plate (10), and the right end surface of the quarter wave plate (8) and the quarter wave plate The right end surface of one wave plate (10) is bonded with the bottom surface of the isosceles prism (9). The top surface of the isosceles prism (9) is bonded to the top surface of the isosceles prism (11), and the placement positions are perpendicular to each other. The up...

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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 Applications(China)
IPC IPC(8): G02B27/28
CPCG02B27/283
Inventor 郑阳郑建平
Owner CHANGCHUN UNIV OF SCI & TECH
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