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Ultra-wideband white noise source based on parallel connection of multi-channel multi-mode chaotic lasers

A chaotic laser, white noise source technology, applied in the field of communication, can solve the problems of reduced output power, difficult implementation, uneven spectral density, etc., to achieve the effect of improving bandwidth and avoiding the bottleneck of electronic bandwidth

Active Publication Date: 2019-08-06
TAIYUAN UNIV OF TECH
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Problems solved by technology

Although this technology can generate noise with a large bandwidth, the use of physical device noise amplification technology requires complex experimental instruments, which is difficult to implement; at the same time, with the increase of bandwidth, the output power of noise generated by this technology decreases, and the spectral density becomes smaller. uneven

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  • Ultra-wideband white noise source based on parallel connection of multi-channel multi-mode chaotic lasers
  • Ultra-wideband white noise source based on parallel connection of multi-channel multi-mode chaotic lasers
  • Ultra-wideband white noise source based on parallel connection of multi-channel multi-mode chaotic lasers

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Embodiment Construction

[0016] The technical solutions of the present invention will be further described in more detail below in conjunction with specific embodiments. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0017] refer to figure 1 as shown, figure 1 It is a structural schematic diagram of an ultra-broadband white noise source based on the parallel connection of multi-channel multi-mode chaotic lasers provided by the present invention. include:

[0018] 1: multimode chaotic laser; 2: fiber mirror; 3: multimode Fabry-Perot laser; 4: 6×1 optical coupler; 5: photodetector.

[0019] A plurality of multimode chaotic lasers 1, optical couplers 4 and photodetectors 5; wherein the multimode chaotic laser 1 is composed o...

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Abstract

The invention discloses an ultra-wideband white noise source based on parallel connection of multi-channel multi-mode chaotic lasers, which generates ultra-wideband white noise by adopting the parallel connection of the multi-mode chaotic lasers. Compared with the existing electronic noise source, the ultra-wideband white noise source is relatively simple in structure and easy to implement. In addition, the ultra-wideband white noise source adopts a method of photoelectric conversion, effectively avoids the bottleneck of the electronic bandwidth and can greatly improve the bandwidth for generating white noise. The power of generating the white noise depends on the power of the chaotic lasers and the responsibility of a photoelectric detector, so that the power of generating the ultra-wideband white noise is adjustable, and the maximum output power is higher.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to an ultra-broadband white noise source based on the parallel connection of multi-channel multi-mode chaotic lasers. 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 source is an important instrument for equipment performance analysis and calibration, especially a white noise source whose power spectral density is uniformly distributed in the frequency domain. Man-made controllable white 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 white noise sources: one is that t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/08G02F1/21H04B10/07
CPCG02F1/21G02F1/213H01S3/08H01S3/08086H04B10/07
Inventor 李璞王云才蔡强贾志伟张建国王安帮张明江
Owner TAIYUAN UNIV OF TECH
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