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Chaotic laser generating device with no time-delay characteristics

A technology of chaotic laser and generating device, which is applied in the direction of devices for controlling output parameters of lasers, lasers, laser components, etc.

Active Publication Date: 2019-09-20
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem of time-delay characteristics in the mirror light feedback chaotic laser, the present invention proposes a chaotic laser generating device that eliminates the time-delay characteristics of the chaotic laser

Method used

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  • Chaotic laser generating device with no time-delay characteristics
  • Chaotic laser generating device with no time-delay characteristics
  • Chaotic laser generating device with no time-delay characteristics

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Embodiment 1

[0020] A chaotic laser generating device without time-delay characteristics, such as figure 1 As shown, it includes semiconductor laser 1, polarization controller 2, first 1×2 fiber coupler 3, 2×2 fiber coupler 4, optical circulator 5, chirped fiber grating 6, second 1×2 fiber coupler 7. Optical isolator8. Wherein, the output end of the semiconductor laser 1 is connected with the input end of the polarization controller 2; the output end of the polarization controller 2 is connected with the input end of the first 1×2 fiber coupler 3; One output port is connected with the input port g of the 2×2 fiber coupler 4; one output port a of the 2×2 fiber coupler 4 is connected with the red input port of the optical circulator 5; the blue port of the optical circulator 5 is connected with the chirp The chirped fiber grating 6 is connected; the white output port of the optical circulator 5 is connected with the input port b of the second 1×2 fiber coupler 7; an output port d of the sec...

Embodiment 2

[0033] A chaotic laser generating device without time-delay characteristics, such as figure 2 As shown, it includes a semiconductor laser 1, a polarization controller 2, a first 1×2 fiber coupler 3, a 2×2 fiber coupler 4, a dispersion compensation fiber 9, a second 1×2 fiber coupler 7, and an optical isolator 8 . Wherein, the output end of the semiconductor laser 1 is connected with the input end of the polarization controller 2; the output end of the polarization controller 2 is connected with the input end of the first 1×2 fiber coupler 3; One output port is connected to the input port g of the 2×2 fiber coupler 4; one output port a of the 2×2 fiber coupler 4 is connected to one end of the dispersion compensation fiber 5, and the other output port e is coupled to the second 1×2 fiber The output end d of the device 7 is connected; the other end of the dispersion compensation fiber 5 is connected to the input end b of the second 1×2 fiber coupler 7; the other output end c of...

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Abstract

The present invention discloses a delay feature-free type chaotic laser generating device, which comprises a semiconductor laser 1, a polarization controller 2, a first 1*2 optical fiber coupler 3, a2*2 optical fiber coupler, an optical circulator 5, a chirped fiber grating 6, a second 1*2 optical fiber coupler 7, and an optical isolator 8. The continuous light output by the semiconductor laser sequentially passes through the polarization controller and the 1*2 optical fiber coupler. After one path of the light passes through the 2*2 optical fiber coupler, the optical circulator, the chirpedfiber grating and the 1*2 optical fiber coupler, one part of the light is returned to the semiconductor laser along an original light path through the 1*2 optical fiber coupler. Meanwhile, a disturbance laser generates the chaotic laser. The other part of the light is returned to an optical fiber ring through the 2*2 optical fiber coupler. Finally, the delay feature-free type chaotic laser is obtained through the optical isolator. The feedback light contains the feedback light which repeatedly passes through the chirped fiber grating, so that a large dispersion is obtained. The feedback lightand the output light are lower in correlation, so that the time delay feature is eliminated.

Description

technical field [0001] The invention relates to the field of optical feedback chaotic laser generation, in particular to a device for generating chaotic laser with no delay characteristics. Background technique [0002] Chaotic laser has the characteristics of randomness, wide spectrum and noise-like. Therefore, chaotic laser is widely used in information security, random number generation, chaotic laser ranging and other fields. There are many ways to generate traditional chaotic lasers, such as mirror light feedback chaos, light injection chaos and photoelectric feedback chaos. The mirror light feedback chaos is widely used as a chaotic laser generating device because of its simple device and easy operation. However, the fixed external cavity feedback delay in the mirror optical feedback chaos makes the chaotic laser generated by it weakly periodic in timing, and the corresponding feedback delay peak appears on the correlation curve, which is called the time delay of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S5/00H01S5/06
Inventor 王龙生王大铭王安帮赵彤王云才王冰洁
Owner TAIYUAN UNIV OF TECH