Single side band frequency spectrum production method and device based on multi-frequency phase modulation

A phase modulation and generating device technology, applied in electromagnetic wave transmission systems, electrical components, transmission systems, etc., can solve problems such as complex structures and low signal energy conversion efficiency, and achieve high energy conversion efficiency, simple structure, and reduced insertion loss Effect

Inactive Publication Date: 2018-04-20
ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] In order to solve the problems of low energy conversion efficiency and complex structure of signals in the prior art, the present invention provides a single sideband spectrum generation device and method based on multi-frequency phase modulation

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  • Single side band frequency spectrum production method and device based on multi-frequency phase modulation
  • Single side band frequency spectrum production method and device based on multi-frequency phase modulation
  • Single side band frequency spectrum production method and device based on multi-frequency phase modulation

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specific Embodiment approach 1

[0025] Specific implementation mode one: as figure 1 As shown, a single-sideband spectrum generation device based on multi-frequency phase modulation provided in this embodiment includes a laser source 1 with a narrow linewidth, an electro-optic modulator 2, a spectrum measurement system 3, an arbitrary waveform generator 4, and a radio frequency Signal amplifier 5;

[0026] The output fiber of the laser source 1 of the narrow line width is connected to the pigtail of the input end of the electro-optic modulator 2, and the single-frequency signal output by the laser source 1 of the narrow line width is introduced into the electro-optic modulator 2;

[0027] The input end of the radio frequency signal amplifier 5 is connected to the arbitrary waveform generator 4, and the output end of the radio frequency signal amplifier 5 is connected to the electro-optic modulator 2, and the output end of the electro-optic modulator 2 is connected to the spectral measurement system 3; The g...

specific Embodiment approach 2

[0029] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the spectral measurement system 3 is a spectrum analyzer, a spectrum analyzer or a scanning F-P interferometer.

[0030] Other steps and parameters are the same as those in the first embodiment.

specific Embodiment approach 3

[0031] Embodiment 3: This embodiment is different from Embodiment 1 in that the narrow linewidth laser source 1 is provided by a narrow linewidth semiconductor laser. The wavelengths of the commonly used communication bands are 1550nm and 1310nm, and the wavelengths of the commonly used bands for laser medical treatment are 1064nm.

[0032] Other steps and parameters are the same as those in the first embodiment.

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Abstract

The invention provides a single side band frequency spectrum production method and device based on multi-frequency phase modulation, and relates to a single side band frequency spectrum production device and method. The device comprises a laser source with narrow linewidth, an electrooptical modulator, an optical spectrum measurement system, an arbitrary waveform generator and a radio frequency signal amplifier; the method comprises the following steps: step one, importing a single frequency signal output by the laser source with narrow linewidth to the electrooptical modulator; step two, reversely calculating based on optical spectrum analysis to obtain a multi-frequency modulation electric signal waveform, setting the arbitrary waveform generator to produce the corresponding multi-frequency modulated electric signal; step three, amplifying the modulation electric signal through the radio frequency signal amplifier, and then transmitting the amplified modulation electric signal to theelectrooptical modulator; and step four, outputting an optical signal formed after modulation to the optical spectrum measurement system to perform the optical spectrum structure analysis. The production device and method provided by the invention solve the problems that the signal energy conversion efficiency is low and the structure is complicated in the prior art. And the device and method canbe applied to the wireless communication.

Description

technical field [0001] The invention relates to a single sideband frequency spectrum generation device and method. Background technique [0002] With the increasing demand for broadband wireless communication, wireless communication continues to expand towards high-frequency bands. However, due to the limitation of the processing rate, the traditional electronic technology is a bit powerless for the processing of high-speed microwave signals. In addition, as the frequency increases, the transmission loss of microwave signals in the air also increases, making long-distance transmission impossible. Photons have a huge bandwidth, and the use of photon technology to process high-speed microwave signals can get rid of the bottleneck of electronic technology processing speed, and has a strong ability to resist electromagnetic interference. In addition, the transmission loss of the signal in the optical fiber is extremely low, and the long-distance transmission of the microwave s...

Claims

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Application Information

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IPC IPC(8): H04B10/548
CPCH04B10/548
Inventor 朱学华杨会成王正刚王冠凌
Owner ANHUI UNIVERSITY OF TECHNOLOGY AND SCIENCE
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