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A 90° Spatial Optical Mixer with Optimal Configuration of Polarization Parameters

A technology that optimizes configuration and polarization parameters. It can be used in instruments, optics, optical components, etc., to solve problems such as the reduction of frequency mixing efficiency, and achieve the effects of slow adjustment rate, accurate polarization state change, and good mechanism reliability.

Active Publication Date: 2022-03-29
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology

[0006] In order to solve the problem of lower mixing efficiency caused by the mismatch between local oscillator light and signal light polarization state in the existing spatial light 90° mixer, the present invention proposes a 90° spatial light mixer with optimized configuration of polarization parameters

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  • A 90° Spatial Optical Mixer with Optimal Configuration of Polarization Parameters

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Embodiment Construction

[0019] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] like figure 1 As shown, the present invention has a 90° spatial optical mixer with optimized configuration of polarization parameters, which includes: local oscillator laser 1, first half-wave plate 2, quarter-wave plate 3, second half-wave plate A wave plate 4, a first polarization beam splitter 5, a third half-wave plate 6, a second polarization beam splitter 7 and a first rectangular roof prism 8, a first balance detector 9, a non-polarization beam splitter 10, the first Four-and-a-half wave plate 11 , third polarizing beamsplitter prism 12 , second rectangular roof prism 13 , second balanced detector 14 , rectangular prism 15 , polarization state detector 16 and polarization state controller 17 .

[0021] The center of the local oscillator light emitted by the local oscillator laser 1 is aligned with the center of the lower side of the firs...

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Abstract

A 90° spatial optical mixer with an optimized configuration of polarization parameters belongs to the field of wireless communication technology, in order to solve the problem of lower mixing efficiency caused by the mismatch between the local oscillator light and the signal light polarization state in the existing spatial optical 90° mixer , the mixer includes: a local oscillator laser, a first half-wave plate, a quarter-wave plate, a second half-wave plate, a first polarizing beam splitter, a third half-wave plate , the second polarizing beam splitter and the first rectangular roof prism, the first balanced detector, the non-polarizing beam splitting prism, the fourth half-wave plate, the third polarizing beam splitting prism, the second right angle roof prism, and the second balanced detector , a right-angle prism, a polarization state detector and a polarization state controller, the present invention has a 90° spatial optical mixer device with optimized configuration of polarization parameters in the fields of inter-satellite and satellite-ground wireless laser communication and the construction of space-space-ground integrated information networks, etc. All have broad application prospects.

Description

technical field [0001] The invention relates to a free space laser communication device, in particular to a space light 90° mixer with high degree of polarization matching, belonging to the technical field of wireless communication. Background technique [0002] Wireless laser communication is a research hotspot in the field of communication due to its characteristics of high speed, high capacity, good confidentiality, and strong anti-electromagnetic interference ability. Wireless laser communication is more suitable for wireless information transmission of inter-satellite links and satellite-ground links. The link distance is long, the channel electromagnetic interference is strong, and the system communication time is short. Compared with microwave communication, wireless laser communication is one of the main technical approaches to solve such communication problems, and has broad application prospects. [0003] Coherent laser communication is a very important research ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/28H04B10/63
CPCG02B27/286H04B10/63
Inventor 南航佟首峰张鹏刘洋秦齐
Owner CHANGCHUN UNIV OF SCI & TECH
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