Photo-generated millimeter wave noise generator

Abstract

The invention relates to a photo-generated millimeter wave noise generator, which comprises a chaotic laser, an erbium-doped fiber amplifier, a second polarization controller, a high nonlinear fiber (HNLF) and a high-speed photoelectric detector which are connected in sequence, wherein the chaotic laser is composed of a semiconductor laser, a first polarization controller, a 60: 40 optical fiber coupler, a variable optical attenuator and an optical fiber reflector. The scheme of the invention provides an optical generation technology of millimeter wave noise, the bottleneck of electronic bandwidth is broken through, the implementation scheme is simple in structure, and millimeter wave noise with larger bandwidth is easy to generate; according to the technical scheme, the power of millimeter wave noise output depends on the amplification power of the erbium-doped optical fiber amplifier; compared with a conventional electronic noise source, the output power of the electronic noise source is easy to adjust, and the maximum power capable of being output is larger; according to the technical scheme, millimeter wave noise is generated through the combined action of the nonlinear effect,dispersion and the like in the high nonlinear optical fiber, the frequency spectrum of the generated millimeter wave noise is flat, and the bandwidth is larger.

Description

technical field [0001] The invention relates to the technical field of information security, in particular to an optically generated millimeter wave noise generator. Background technique [0002] In radar systems, communication systems, and weapon guidance systems, it is necessary to use controllable noise sources to test the anti-noise interference capabilities of the systems. Therefore, the noise generator is an important instrument for equipment performance analysis and calibration. In communication and control systems, it is often necessary to use noise generators to test the anti-interference performance of electronic equipment, especially millimeter-wave noise with uniform power density. Therefore, how to generate millimeter-wave noise signals with continuously controllable output power and uniform and flat noise power spectral density has become an important research field. [0003] Existing noise generators are generally divided into two categories: digital synthes...

AI Technical Summary

Problems solved by technology

Using this technology can generate noise with a larger bandwidth, and the accuracy is relatively high, but its implementation circuit often needs to be amplified, which is more complicated, and with the increase of the bandwidth, the flatness of the output noise power becomes worse

[0004]However, the operating frequency of existing noise generators cannot meet the operating frequency of some high-frequency devices

How to output a continuous random noise signal with a flat spectrum and stable and controllable power in a very wide frequency range (hundreds of GHz), there are many difficulties in principles, technologies, processes, etc.

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