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Optical generation method and device for 40GHz millimeter wave signal

A generation method and millimeter wave technology, which are applied in the field of fiber laser technology and microwave photonics, can solve the problems of microwave/millimeter wave signals cannot be transmitted over long distances, and the wireless transmission loss is large, and achieve a simple structure, reduced system cost, and low cost. Effect

Active Publication Date: 2019-11-05
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

As the operating frequency increases, the wireless transmission loss increases, so microwave / millimeter wave signals are not suitable for long-distance transmission

Method used

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  • Optical generation method and device for 40GHz millimeter wave signal

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Embodiment Construction

[0010] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0011] A method and device for optically generating a 40GHz millimeter wave signal, characterized in that it includes a narrow linewidth adjustable laser (1), a first optical circulator (2), a first Brillouin gain fiber (3), a first Erbium-doped fiber amplifier module (4), second optical circulator (5), second Brillouin gain fiber (6), fiber coupler (7), second Erbium-doped fiber amplifier module (8), photodetector (9), the output end of the narrow linewidth adjustable laser (1) is connected with the first port (21) of the first optical circulator (2), and the second port (22) of the first optical circulator is connected with the first One end of the Liouin gain fiber (3) is connected, the third port (23) of the first optical circulator is connected with one end of the first erbium-doped fiber amplifier module (4), and the other end of the fir...

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Abstract

The invention discloses an optical generation method and device for a 40GHz millimeter wave signal. The device comprises a narrow linewidth adjustable laser (1), a first optical circulator (2), a first Brillouin gain optical fiber (3) and a first erbium-doped optical fiber amplification module (4), a second optical circulator (5), a second Brillouin gain optical fiber (6), an optical fiber coupler(7), a second erbium-doped optical fiber amplification module (8)and a photodetector (9), laser output by the narrow-linewidth adjustable laser is used as Brillouin pump light; stimulated Brillouin scattering occurs twice on a first Brillouin gain optical fiber and a second Brillouin gain optical fiber respectively; four-order Brillouin Stokes light can be generated by utilizing the linear amplification effect of the two erbium-doped optical fiber amplification modules, the four-order Stokes light and transmission pump light in the first Brillouin gain optical fiber are subjected to frequencybeating, and millimeter wave signals can be obtained on the photoelectric detector. The photo-generated millimeter wave signal method is simple in structure and low in cost, and has application potential in optical wireless communication, microwave photons and optical fiber sensing.

Description

technical field [0001] The invention relates to fiber laser technology and microwave photon technology, in particular to an optical generation method and device for a 40GHz millimeter wave signal. Background technique [0002] With the globalization of wireless communication and mobile Internet technology and applications, wireless access is developing towards the fifth-generation mobile communication technology (5G) with ultra-broadband, ultra-high speed and ultra-large capacity. Due to the limited wireless spectrum resources and the increasingly crowded wireless frequency bands, in order to expand the capacity of wireless communication, it is required to increase the system operating frequency and expand to higher microwave / millimeter wave frequency bands. On June 8, 2017, the Ministry of Industry and Information Technology officially released the "Opinions on Publicly Soliciting the Frequency of the Fifth Generation International Mobile Communication System (5G) in the Mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B10/50H04B10/291
CPCH04B10/503H04B10/291
Inventor 徐荣辉苑立波邓仕杰秦祖军刘厚权陈明成煜
Owner GUILIN UNIV OF ELECTRONIC TECH
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