Noise reduction package of distributed feedback fiber laser

A fiber laser, distributed feedback technology, applied in the direction of laser components, etc., can solve the problems of laser disturbance, destruction of narrow line width and low noise advantages, and the inability to realize industrial packaging, so as to reduce thermal noise and ensure tensile performance Effect

Active Publication Date: 2014-12-10
山东飞博赛斯光电科技有限公司
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Problems solved by technology

The reason why the domestic technology of DFB FL light source is not yet mature is mainly because the laser itself is easily disturbed by external sound waves, which destroys the original advantages of narrow line width and low noise, and cannot achieve stable industrial packaging

Method used

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  • Noise reduction package of distributed feedback fiber laser
  • Noise reduction package of distributed feedback fiber laser
  • Noise reduction package of distributed feedback fiber laser

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Embodiment Construction

[0021] Such as figure 1 As shown, a distributed feedback type fiber laser noise reduction packaging structure, which includes a hollow cylindrical shell 1, a shell cover 12 matched with the open end of the shell 1, and a curved plastic metal base 8 is arranged in the shell 1 ,Such as image 3 As shown, a C-shaped molding groove 9 is provided on the upper surface of the curved molding metal base 8, and the bending diameter of the molding groove 9 is controlled between 25 mm and 45 mm. The relationship between bending diameter and line width is as follows Figure 6As shown, it can be seen that when the diameter is between 25mm and 45mm, the linewidth value of the laser can be effectively compressed, the bending diameter is too large or the conventional free placement state will make the laser linewidth wider, and the bending diameter is too small. It will cause excessive fiber loss and affect the output power. This patent has adopted 30mm diameter and obtained good effect. ...

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Abstract

The invention discloses a noise reduction package of a distributed feedback fiber laser, and the noise reduction package comprises a hollow cylindrical shell, and a shell to cover matched with a shell opening end, wherein a bending and molding metal pedestal is arranged in the shell, the upper surface of the bending and molding metal pedestal is provided with a C-shaped molding groove whose bending diameter is controlled in the range from 25mm to 45mm, and a vibration-attenuation and sound-insulation measure is taken between the shell and the bending and molding metal pedestal.

Description

technical field [0001] The present application relates to a fiber laser packaging structure, in particular to a fiber laser packaging that reduces the influence of DFB FL noise. Background technique [0002] Fiber Laser (Fiber Laser) refers to a laser that uses a rare earth-doped glass fiber as a gain medium. Fiber lasers can be developed on the basis of fiber amplifiers: under the action of pump light, high power density is easily formed in the fiber, resulting in laser The laser energy level of the working substance is "particle number inversion", and when properly added to the positive feedback loop (to form a resonant cavity), the laser oscillation output can be formed. Distributed feedback fiber laser (DFB FL for short) is a laser composed of writing a phase shift grating on a section of doped fiber. The laser has outstanding features such as small size, light weight, narrow output laser line width, and low noise. It is widely used in hydrophones, vibration sensors, an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/02
Inventor 倪家升王昌彭纲定郭健王英英祁海峰宋志强张发祥王蒙
Owner 山东飞博赛斯光电科技有限公司
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