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Tiled 90-degree spatial optical mixer

A space light and frequency mixer 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 space light mixing device

Active Publication Date: 2018-06-26
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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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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  • Tiled 90-degree spatial optical mixer

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Effect test

Embodiment Construction

[0015] As shown in Figure 1, the tiled 90-degree spatial light mixer of the present invention consists of a first crystal 7, a second crystal 12, a first polarization splitting prism 4, a second polarization splitting prism 16, and a first quarter wave Plate 10, second quarter-wave plate 11, third quarter-wave plate 13, first half-wave plate 6, second half-wave plate 8, third half-wave plate Sheet 9, the fourth half-wave plate 14, the first isosceles right-angle prism 2 and the second isosceles right-angle prism 17; the principle of crystal birefringence is used to achieve coherent mixing of signal light 1 and local oscillator light 15, After mixing, four coherent lights are output, that is, the first output coherent light 3, the second output coherent light 5, the third output coherent light 18, and the fourth output coherent light 19.

[0016] The left end of the first crystal 7 is bonded to the right end face of the first half-wave plate 6 at the front side position, and the l...

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Abstract

The invention belongs to the optical communication field, and relates to a tiled 90-degree spatial optical hybrid. The optical hybrid is mainly composed of crystals (7, 12), polarization splitting prisms (4, 16), quarter-wave plates (10, 11, 13), half-wave plates (6, 8, 9, 14) and isosceles rectangular prisms (2, 17). The coherent hybrid frequency of signal light (1) and local oscillator light (15) is realized by using a crystal birefringence light splitting principle, and after hybrid frequency, four paths of coherent light (3, 5, 18, 19) are output. The tiled 90-degree spatial optical hybrid is mainly applied to a spatial coherent laser communication reception system.

Description

Technical field [0001] The invention relates to a tiled 90-degree spatial optical mixer, which realizes the coherent mixing of signal light and local oscillator light. It is applied to the space coherent laser communication receiving system and belongs to the field of optical communication technology. Background technique [0002] Space coherent laser communication has many advantages such as high detection sensitivity, good confidentiality, and is conducive to light and miniaturized design. It is a promising technical means for high-speed and large-capacity information transmission between interstellar in the future. Spatial coherent laser communication uses the coherent mixing of local oscillator light and signal light, and increases the total power of signal light and local oscillator light by increasing the power of the local oscillator light, so as to reach the minimum power that the detector can detect. The function of the spatial optical mixer makes the signal light and t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/28
CPCG02B27/283
Inventor 郑阳贺文俊朴宇郑建平
Owner CHANGCHUN UNIV OF SCI & TECH
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