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Ultra-wideband photo-generated millimeter wave noise generator

A noise generator, a technology for optically generating millimeter waves, applied in the fields of cryptography, information security, and communication, which can solve the problems of uneven spectral density, difficulty in implementation, and reduction in noise output power.

Pending Publication Date: 2020-08-18
TAIYUAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although this technology can generate millimeter-wave noise with a large bandwidth, the use of physical device noise amplification technology requires complex experimental instruments and is difficult to implement; at the same time, as the bandwidth increases, the output power of the noise generated by this technology decreases, and the frequency spectrum Density becomes uneven

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Embodiment Construction

[0019] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0020] Such as figure 1 As shown, the ultra-broadband optically-generated millimeter-wave noise generator of the present invention includes a superluminescent light-emitting diode 1, a fiber isolator 2, an erbium-doped fiber amplifier 3, a polarization controller 4, and a highly nonlinear fiber 5 (HNLF) connected in sequence and a high-speed photodetector 6;

[0021] Among them, the wide-spectrum ASE noise generated by the superluminescent light-emitting diode 1 is amplified to a certain power by the erbium-doped fiber amplifier 3 after passing through the optical fiber isolator 2, and then adjusted by the polarization controller 4 to input a certain distance of high nonlinear optical fiber 5. The detector 6 outputs th...

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Abstract

The invention relates to an ultra-wideband photo-generated millimeter wave noise generator. The ultra-wideband photo-generated millimeter wave noise generator comprises a super-radiation light emitting diode, an optical fiber isolator, an erbium-doped optical fiber amplifier, a polarization controller, a high nonlinear optical fiber (HNLF) and a high-speed photoelectric detector which are connected in sequence. According to the scheme, millimeter wave noise is generated through an optical method, the bottleneck of electronic bandwidth is broken through, ultra-bandwidth millimeter wave noise iseasy to generate, and the structure is simple; the power of output noise depends on the amplification power of the erbium-doped optical fiber amplifier, and compared with a conventional electronic noise generator, the output power of the ultra-wideband photo-generated millimeter wave noise generator is easy to adjust, and the maximum power capable of being output is larger. According to the invention, millimeter wave noise is generated by using the combined action of the nonlinear effect and dispersion in the high nonlinear optical fiber, the spectral density of the generated noise is more uniform, and the bandwidth is larger.

Description

technical field [0001] The invention relates to an ultra-broadband light-generated millimeter-wave noise generator, which belongs to the fields of cryptography, communication, information security and the like. Background technique [0002] As the existence form of matter itself, noise inevitably interferes with the generation and transmission of signals. For any system, noise is an unavoidable problem. Only by solving the noise problem can we make further progress in the related engineering technology field. [0003] Noise generators are important instruments for equipment performance analysis and calibration, especially ultra-wideband millimeter-wave noise generators with flat spectrum in the millimeter-wave range. Man-made controllable millimeter wave noise plays a very important role in communication, navigation guidance, remote sensing control, aerospace and other fields. At present, there are two extreme phenomena in the development of noise generators: one is that t...

Claims

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Application Information

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IPC IPC(8): H03B17/00H04B10/291H04B10/2513H04B10/80H04B10/293
CPCH03B17/00H04B10/291H04B10/2513H04B10/802H04B10/293Y02D30/70
Inventor 李璞蔡强焦海丽贾志伟王云才
Owner TAIYUAN UNIV OF TECH
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