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Device for restraining stimulated Brillouin scattering of optical fibers

A technology of stimulated Brillouin and optical fiber, applied in optics, nonlinear optics, instruments, etc., to achieve the effect of simple and compact structure, easy integration, and improved beam quality

Inactive Publication Date: 2010-12-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

However, the power amplification of single-frequency fiber amplifiers is limited by nonlinear effects, the most important nonlinear effect is stimulated Brillouin scattering

Method used

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  • Device for restraining stimulated Brillouin scattering of optical fibers
  • Device for restraining stimulated Brillouin scattering of optical fibers
  • Device for restraining stimulated Brillouin scattering of optical fibers

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Embodiment Construction

[0021] see figure 1 . figure 1 It is a structural schematic diagram of the device for suppressing optical fiber stimulated Brillouin scattering of the present invention. It can be seen from the figure that the device for suppressing the stimulated Brillouin scattering of optical fiber in the present invention is a metal cylinder composed of the two ends of the first metal half cylinder 1 and the second metal half cylinder 2 through metal fixing parts 9 The inner wall of the metal cylinder is engraved with a single thread groove 3 from top to bottom for the active optical fiber of the single-frequency linearly polarized fiber amplifier to be embedded, and the second metal half cylinder 2 is equipped with a water cooling device 4 or a TEC temperature sensor. control module 5; the active optical fiber is introduced and drawn out through two oblique holes 11 on the wall of the metal cylinder.

[0022] The water cooling device 4 is to arrange two connected water pipes 4 in the wa...

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Abstract

The invention discloses a device for restraining stimulated Brillouin scattering of optical fibers for a single-frequency linear polarization optical fiber amplifier. The device is a metal barrel formed by jointing two ends of a first metal semi-barrel and a second metal semi-barrel by a metal fixed block, wherein a single-thread groove for embedding the active optical fibers of the single-frequency linear polarization optical fiber amplifier is etched in the inner wall of the metal barrel from top down,; the second metal semi-barrel is provided with a water cooling device or a thermoelectric cooler (TEC) temperature control module; and the active optical fibers are led in and out through two inclined through holes on the barrel wall of the metal barrel. The device can effectively restrain the stimulated Brillouin scattering of the single-frequency linear polarization optical fiber amplifier in a laser amplifying process, so that the high-power and high-beam-quality output of the single-frequency linear polarization optical fiber amplifier can be realized; meanwhile, the device has a simple and compact structure, is convenient to integrate and can be applied in a plurality of high-power single-frequency laser fields.

Description

technical field [0001] The invention relates to an optical fiber, in particular to a device for suppressing optical fiber stimulated Brillouin scattering for a single-frequency linearly polarized optical fiber amplifier. Background technique [0002] Single-frequency, linearly polarized, and high-power lasers are widely used in lidar, spectroscopy, and precision measurement. With the emergence of cladding pumping technology, single-frequency optical fibers with double-clad polarization-maintaining fibers as the amplification medium The output power and conversion efficiency of the amplifier are greatly improved. However, the power amplification of single-frequency fiber amplifiers is limited by nonlinear effects, and the most important nonlinear effect is stimulated Brillouin scattering. The stimulated Brillouin scattering threshold of a single-frequency fiber amplifier is affected by factors such as the core diameter and length of the fiber, and the temperature gradient in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/365G02F1/39
Inventor 刘驰漆云凤周军董景星楼祺洪
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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