Single-crystal 90-degree space optical mixer with high space utilization

An optical mixer, high-space technology, applied in optics, instruments, optical components, etc., can solve the problems of low insertion loss, phase noise, large volume, etc., and achieve reduced insertion loss, improved performance, and uniform output power Effect

Active Publication Date: 2017-06-13
CHANGCHUN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of phase noise and low insertion loss caused by the large volume of the existing spatial optical mixer and the different optical path differences of each branch, the present invention proposes a 90° spatial optical mixer with single crystal and high space utilization

Method used

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  • Single-crystal 90-degree space optical mixer with high space utilization
  • Single-crystal 90-degree space optical mixer with high space utilization
  • Single-crystal 90-degree space optical mixer with high space utilization

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Effect test

Embodiment 1

[0045] Such as image 3 As shown, the polarizing beam splitting prism 2 is bonded by two right-angled triangular prisms with an inclined plane, and the inclined plane is coated with a polarizing beam splitting film;

[0046] The first quarter-wave plate 1 and the first half-wave plate 3 are respectively arranged on the 1 / 2 positions of the front and rear sides of the polarization splitter prism 2;

[0047] The first glass spacer 5 is arranged directly above the first half-wave plate 3, is located at 1 / 6 of the polarization beam splitter 2, and is completely attached to the polarization beam splitter 2, and the two are symmetrically arranged and attached to the center of the polarization beam splitter 2. On the slope of the first isosceles rectangular prism 4;

[0048] The second half wave plate 6 is arranged on the side of the polarization beam splitter 2, and is positioned at 1 / 2 of the polarization beam splitter 2, and the incident light S passes through the polarization be...

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Abstract

The present invention provides a single-crystal 90-degree space optical mixer with high space utilization. The objective of the invention is to solve the problems that a current space optical mixer is large in size, phase noise is caused by different optical path differences of each branch and the insertion loss is low. A polarization splitting prism is bonded by two right triangle prisms in an inclined plane mode, an inclined plane is plated with polarizing beam splitter; a first quarter wave plate and a first half wave plate are respectively arranged at the central positions of front and back surfaces of the polarization splitting prism; a first glass gasket is arranged right above the first half wave plate and is completely fit on the polarization splitting prism, and the first glass gasket and the first half wave plate are arranged in central symmetry mode and fit at the inclined plane of a first isosceles right-angle prism; a second half wave plate is arranged on the side surface of the polarization splitting prism, and incident light S penetrates the polarization splitting prism and is incident on the second half wave plate; and a second glass gasket is arranged right below the second half wave plate and completely fit on the polarization splitting prism, and the second glass gasket and the second half wave plate are arranged in central symmetry mode and fit on the inclined plane of a second isosceles right-angle prism.

Description

technical field [0001] The invention relates to a 90° spatial light mixing device, which can realize the frequency mixing and amplification of signal light and local oscillator light in the optical domain, and belongs to the technical field of wireless communication. Background technique [0002] Compared with microwave communication, laser wireless communication has the advantages of high communication rate, strong anti-electromagnetic interference ability, and good confidentiality. It is a very important communication method in the field of communication. In the inter-satellite and satellite-to-ground communication links, there are often large interferences such as background light and electromagnetic interference. At the same time, in some cases, high confidentiality of communication is often required. Laser wireless communication can solve the above problems well. , so it has potential application prospects in communication between government and military departments or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/28
CPCG02B27/283G02B27/285
Inventor 佟首峰南航张鹏李博常帅
Owner CHANGCHUN UNIV OF SCI & TECH
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