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Fiber Laser Multispectral Modulation Module

A fiber laser, multi-spectral line technology, applied in lasers, laser parts, phonon exciters, etc., can solve the problems of fiber passive transmission device damage, output energy loss fiber lasers, etc., to reduce nonlinear effects, improve The effect of output power

Active Publication Date: 2019-07-09
CHINA WEAPON EQUIP RES INST
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Problems solved by technology

[0002] In fiber lasers and fiber passive transmission devices, due to nonlinear effects such as stimulated Brillouin Scattering (SBS) of fibers, a large amount of output optical power is transferred to backscattered Brillouin light, resulting in loss of output energy and even Laser fiber passive transmission device damage

Method used

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  • Fiber Laser Multispectral Modulation Module
  • Fiber Laser Multispectral Modulation Module
  • Fiber Laser Multispectral Modulation Module

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Embodiment Construction

[0025] The specific embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0026] figure 1 Schematic diagram of the multispectral modulation setup. Including an electro-optical modulation crystal 1, an optical fiber output pigtail 2, an optical fiber splitter 3, a modulated signal optical output pigtail 4, a photoelectric detection oscilloscope 5 and a modulation circuit 6, wherein the optical fiber output pigtail 2 is connected to the entire modulation device, The modulation circuit 6 controls the frequency modulation electric field amplitude A in the modulation crystal 1 MO , the laser light enters the optical fiber beam splitter 3 after being modulated by the electro-optical modulation crystal 1, and in the optical fiber beam splitter 3, a part of the modulated multispectral signal light enters the modulated signal light output pigtail 4, and the multispectral signal light is output; Another part of the multi...

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Abstract

The invention provides a multi-spectral modulation device for a fiber laser. The device can modulate monochromatic input signal light into multi-spectral signal light. The monochromatic signal light is superposed with a frequency modulation electric field in an electro-optical modulation crystal, thereby accomplishing modulation from the monochromatic signal light to the multi-spectral signal light. The optimal value of the amplitude of the frequency modulation electric field is selected via an optimization algorithm in a modulation circuit, so that the intensities of spectral lines of the multi-spectral signal light are equal, and then maximum output power is obtained.

Description

technical field [0001] The invention belongs to the field of fiber laser modulation, and in particular relates to a fiber laser multispectral line modulation device and method. Background technique [0002] In fiber lasers and fiber passive transmission devices, due to nonlinear effects such as stimulated Brillouin Scattering (SBS) of fibers, a large amount of output optical power is transferred to backscattered Brillouin light, resulting in loss of output energy and even The laser fiber passive transmission device is damaged. This nonlinear effect is particularly obvious in the case of narrow linewidth (single frequency), which is the main factor restricting the power increase of single frequency fiber laser. Contents of the invention [0003] The invention adopts the multi-spectral line electro-optic modulation method, modulates the signal light into multiple spectral lines, and reduces the influence of the nonlinear effect. At the same time, an optimization algorithm ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/10
Inventor 张马驰史俊锋杨振孙鑫鹏张帆马长正
Owner CHINA WEAPON EQUIP RES INST
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