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Device and method for generating millimeter wave noise through quantum phase fluctuation

A phase fluctuation and millimeter wave technology, which is applied in the direction of noise generation, electrical components, power oscillators, etc., can solve the problems of poor flatness and narrow bandwidth, and achieve the effect of wide bandwidth and flat power spectrum

Pending Publication Date: 2021-01-12
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects of poor flatness and narrow bandwidth of the noise power spectrum generated by the current noise source described in the prior art, the present invention provides a device and method for generating millimeter wave noise by quantum phase fluctuations

Method used

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  • Device and method for generating millimeter wave noise through quantum phase fluctuation
  • Device and method for generating millimeter wave noise through quantum phase fluctuation
  • Device and method for generating millimeter wave noise through quantum phase fluctuation

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Embodiment 1

[0035] This embodiment provides a device for generating millimeter wave noise by quantum phase fluctuations, such as figure 1 As shown, the device includes a first single-mode laser, a second single-mode laser, an optical coupler, and a single-row carrier-balanced photodetector. The output terminal of the first single-mode laser is connected to the first input port of the optical coupler; the output terminal of the second single-mode laser is connected to the second input port of the optical coupler; the first and second input ports of the optical coupler The two output ports are connected to the first and second input ports of the single row carrier balanced photodetector; the output port of the balanced photodetector outputs broadband millimeter wave noise signal.

[0036] It should be noted that, when the first single-mode laser and the second single-mode laser work at a current lower than the threshold, quantum phase fluctuations are generated inside the lasers, so that th...

Embodiment 2

[0041] This embodiment provides a method for generating millimeter wave noise from quantum phase fluctuations, which is implemented based on the device described in Embodiment 1. The method comprises the steps of:

[0042] S1: using the first single-mode laser and the second single-mode laser to generate spectra of quantum phase fluctuations with different central wavelengths;

[0043] S2: Input the spectrum with quantum phase fluctuation generated by S1 into the optical coupler for coupling;

[0044] S3: input the coupling signal output by the optocoupler to the single row carrier balance photodetector to convert the spectrum to the electric spectrum, thereby outputting the millimeter wave noise signal.

[0045] Wherein, S3 is specifically: the single-row carrier balance photodetector performs self-convolution on the spectrum of quantum phase fluctuations at different center frequencies to generate electrical noise corresponding to the center frequency.

[0046] The formula...

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Abstract

The invention relates to a device and method for generating millimeter wave noise through quantum phase fluctuation. The device comprises a first single-mode laser, a second single-mode laser, an optical coupler and a one-way carrier balance photoelectric detector. According to the method, two single-mode lasers with different central wavelengths are mainly used as broadband noise sources, opticalsignals with quantum phase fluctuation are generated when the lasers work in a state of being lower than a threshold current, and outputs of the two single-mode lasers couple two beams of light sources through an optical coupler; and the output of the optical coupler is subjected to spectrum-to-spectrum conversion through a waveguide integrated uni-traveling carrier balance photoelectric detectorso as to generate millimeter wave noise. The problems that an existing noise source is poor in flatness and narrow in frequency spectrum range are solved.

Description

technical field [0001] The invention relates to the field of optoelectronic technology, and more specifically, to a device and method for generating millimeter wave noise by quantum phase fluctuations. Background technique [0002] Quantum phase fluctuation refers to the phenomenon of single-mode laser operating below the threshold current, which will lead to the broadening of the laser spectrum. Noise is the main interference in signal transmission. In the optical field, the noise generated by instruments or components will greatly interfere with the system's dynamic range, sensitivity and other parameters, thereby reducing the performance of the system. Therefore, as long as the problem of noise can be dealt with well, it can have a broader application prospect in engineering technology fields such as radar and communication. [0003] Noise sources are widely used, mainly for signal interference, testing of communication and radar systems, phase tracking of receivers, etc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03B17/00H03B29/00
CPCH03B17/00H03B29/00
Inventor 陈永祥王云才塞韦浩·罗曼·津苏高震森黄奕敏黄海碧
Owner GUANGDONG UNIV OF TECH
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