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A Optical Feedback Chaotic Laser

A chaotic laser and optical feedback technology, applied to the structure of the optical resonant cavity, can solve the problem of single supply and achieve the effect of improving confidentiality and eliminating delay characteristics

Inactive Publication Date: 2011-12-14
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to select a suitable scatterer as the continuous feedback cavity of the semiconductor laser, to provide continuous backscattering alone, or to provide continuous backscattering and amplification, and randomly disturb the semiconductor laser to eliminate the chaotic laser. The delay characteristics of the chaotic communication, the accuracy of the chaotic laser ranging and the randomness of the random number are improved, and the purpose is to provide an optical feedback chaotic laser

Method used

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  • A Optical Feedback Chaotic Laser
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specific Embodiment approach

[0023] Such as figure 2 , is a specific structure diagram of an optical feedback chaotic laser without delay characteristics. Its specific implementation is as follows:

[0024] An optical feedback chaotic laser without delay characteristics, including a semiconductor laser 1, a fiber coupler 2, an optical attenuator 3, a polarization controller 4, a semiconductor optical amplifier 5, and a continuous feedback cavity 6, which are sequentially connected, wherein, The continuous feedback cavity 6 is formed by a single-mode optical fiber 1a.

[0025] The continuous light output from the semiconductor laser 1 passes through the fiber coupler 2 sequentially, and is injected into the continuous feedback cavity 6 through the optical attenuator 3 , the polarization controller 4 and the semiconductor optical amplifier 5 . Each part of the single-mode fiber 1a in the continuous feedback cavity 6 scatters the light incident into the fiber, and the backscattered light passes through th...

Embodiment approach 2

[0033] Such as image 3 , is another specific structural diagram of an optical feedback chaotic laser without delay characteristics. The specific implementation is as follows:

[0034] An optical feedback chaotic laser without delay characteristics, including a semiconductor laser 1, a fiber coupler 2, an optical attenuator 3, a polarization controller 4, a semiconductor optical amplifier 5, and a continuous feedback cavity 6, which are connected in sequence, wherein the continuous The feedback cavity 6 is composed of a section of erbium-doped optical fiber 1b and a pump laser 2b.

[0035] The continuous light output from the semiconductor laser 1 passes through the fiber coupler 2 sequentially, and is injected into the continuous feedback cavity 6 through the optical attenuator 3 , the polarization controller 4 and the semiconductor optical amplifier 5 . Each part of the erbium-doped optical fiber 1b in the continuous feedback cavity 6 produces backward scattering to the in...

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Abstract

The invention discloses an optical feedback chaos laser which comprises a continuous feedback cavity, wherein the continuous feedback cavity is a scatterer for singly providing continuous backward scattering, or a scatterer for providing and amplifying the continuous backward scattering; the scatterer for singly generating the continuous backward scattering is one of optical fiber, film waveguideand strip waveguide; the scatterer for providing and amplifying the continuous backward scattering is a combination of doped optical fiber and a pump laser; and the doped optical fiber is one of erbium-doped optical fiber, praseodymium-doped optical fiber and rubidium-doped optical fiber. The continuous feedback cavity of the optical feedback chaos laser generates chaotic laser light, thoroughly eliminates the time delay characteristic of an optical feedback semiconductor laser, improves confidentiality of chaotic communication, accuracy of distance measurement and randomness of random numbers, and can be applied in the fields of communication, remote sensing, sensing and the like.

Description

technical field [0001] The present invention is related to optical feedback chaotic laser, more specifically, it is a kind of optical feedback chaotic laser including semiconductor laser, fiber coupler, optical attenuator, polarization controller, semiconductor optical amplifier and scatterer. Background technique [0002] Chaotic laser has high bandwidth and noise-like characteristics, and is widely used in secure communication, laser radar, optical time domain transmitter, optical coherence tomography, fast random number generator, etc. [0003] Chaotic lasers can be obtained by adding perturbations to semiconductor lasers, such as optical feedback, optical injection, or photoelectric feedback. Among them, optical feedback semiconductor lasers are favored in applications because of their simple structure, easy adjustment and control. However, while optical feedback semiconductor lasers bring convenience to the application of chaotic lasers, they also have disadvantages—tim...

Claims

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Application Information

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IPC IPC(8): H01S5/10
Inventor 王安帮王云才李璞武媛王冰洁徐航郭园园
Owner TAIYUAN UNIV OF TECH
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