Device for optically generating microwave signals

A microwave signal and optical technology, applied in the field of communication technology, fiber laser technology and microwave photonics, can solve problems such as difficult integration and complex structure

Inactive Publication Date: 2020-10-27
GUILIN UNIV OF ELECTRONIC TECH
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Problems solved by technology

In the photoelectric oscillator method, many photoelectric devices are required to make the structure very complicated, and it is difficult to achieve integration

Method used

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  • Device for optically generating microwave signals

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Embodiment Construction

[0016] The technical solution of the present invention will be further described below in conjunction with the accompanying drawings.

[0017] A device for optically generating microwave signals, comprising: a narrow linewidth adjustable laser (1), a first fiber coupler (2), a first optical amplifier (3), a four-port optical circulator (4), a first cloth Brillouin gain fiber (5), three-port optical circulator (6), second Brillouin gain fiber (7), second optical amplifier (8), second fiber coupler (9), third fiber coupler (10), photodetector (11).

[0018] In the device for optically generating microwave signals, the output end of the narrow linewidth adjustable laser (1) is connected to the A1 port of the first fiber coupler (2), and the B1 port of the first fiber coupler (2) is connected to the first The input end of the optical amplifier (3) is connected, the 41 ports of the four-port optical circulator (4) are connected with the output end of the first optical amplifier (3...

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Abstract

The invention discloses a device for optically generating a microwave signal. The device comprises a narrow linewidth adjustable laser (1), a first optical fiber coupler (2), a first optical amplifier(3), a four-port optical circulator (4), a first Brillouin gain optical fiber (5), a three-port optical circulator (6), a second Brillouin gain optical fiber (7), a second optical amplifier (8), a second optical fiber coupler (9), a third optical fiber coupler (10) and a photoelectric detector (11). Laser output by the narrow-linewidth adjustable laser (1) is used as a Brillouin pump. The Brillouin pump generates stimulated Brillouin scattering in the first Brillouin gain optical fiber to generate first-order Stokes, the first-order Stokes generates cascaded stimulated Brillouin scattering inthe second Brillouin gain optical fiber to generate third-order Stokes light, the third-order Stokes and the pump generate beat frequency, and the beat frequency light is converted into a microwave signal through the photoelectric detector. The photo-generated microwave signal is simple in structure and low in cost, and has an application prospect in optical wireless communication, microwave photons and optical fiber sensing.

Description

technical field [0001] The invention relates to communication technology, optical fiber laser technology and microwave photon technology, in particular to a device for optically generating microwave signals. Background technique [0002] In recent years, people's increasing demand for high-definition video and various multimedia equipment has prompted the rapid development of wireless communication technology and optical fiber communication technology. Under this development trend, microwave photonics emerges as the times require and becomes a research hotspot. Among them, photogenerated microwave technology, as the most important content in microwave photonics, has been applied in microwave communication, satellite communication, radar system, radio astronomy, microwave remote sensing, and optical fiber wireless communication due to its advantages of high frequency, low phase noise, and compact structure. and terahertz spectroscopy. [0003] There are many methods of gene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/30H01S3/067H04B10/50
CPCH01S3/302H01S3/067H01S3/06754H04B10/503
Inventor 刘铁园徐荣辉张先强邓仕杰陈明苑立波
Owner GUILIN UNIV OF ELECTRONIC TECH
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