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Fiber cladding light filter and manufacturing method thereof

A technology for optical fiber cladding and manufacturing methods, applied in the field of fiber optic cladding optical filter and its manufacturing, can solve the problems of optical glue temperature rise, power limitation, etc., and achieve thermal damage prevention, simple structure, and high filtering efficiency Effect

Active Publication Date: 2011-11-23
SHANGHAI FEIBO LASER TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since the optical glue absorbs the pump light and laser to a certain extent, the conversion of light energy into heat energy will cause the temperature of the optical glue to rise beyond the threshold that the optical glue can withstand, thus limiting the optical fiber cladding optical filter. Power that can be filtered

Method used

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  • Fiber cladding light filter and manufacturing method thereof
  • Fiber cladding light filter and manufacturing method thereof
  • Fiber cladding light filter and manufacturing method thereof

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the embodiments and accompanying drawings, but the protection scope of the present invention should not be limited thereby.

[0023] see figure 1 , figure 1 It is a schematic structural view of the optical fiber cladding light filter of the present invention, as shown in the figure, the optical fiber cladding light filter of the present invention is characterized in that its composition includes an optical fiber to be filtered out cladding light, a metal container 6 and a chiller 9. The side wall of the metal container 6 has a water inlet, a water outlet, and optical fiber through holes 7 on both ends. The water supply port of the water chiller 9 is connected to the water inlet of the metal container 6. The water chiller 9 The water return port of the metal container 6 is connected to the water outlet; the single-clad optical fiber 1 of the cladding light to be filtered passes through the optical...

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Abstract

The invention discloses a fiber cladding light filter and a manufacturing method thereof. In the fiber cladding light filter, a section of coating layer of a single-cladding fiber or a section of coating layer and an outer cladding of a double-cladding fiber are removed; the surface of an exposed cladding or an inner cladding is roughened by using a cutting knife or a chemical agent; total reflection conditions of pumping light and cladding laser in the cladding of the single-cladding fiber and the inner cladding of the double-cladding fiber are destroyed; a section of the fiber is sealed in a metal container with a water inlet and a water outlet; and flowing cooling water is filled into the metal container. The fiber cladding light filter is simple in structure and high in filtering efficiency, can bear filtered cladding light with higher power and prevent thermal damage on a component and can be applied to a high-power fiber laser and a high-power fiber amplifier.

Description

technical field [0001] The invention relates to a fiber laser and a fiber amplifier, in particular to a fiber cladding optical filter and a manufacturing method thereof. Background technique [0002] In high-power fiber lasers and fiber amplifiers, it is necessary to filter out the pump light and laser light in the cladding of the single-clad fiber or the inner cladding of the double-clad fiber before the final output to improve the final output light. beam quality. The existing technology is to remove a section of coating layer of single-clad optical fiber or a section of coating layer and outer cladding layer of double-clad optical fiber, and soak the exposed part in optical glue, because the refractive index ratio of optical glue requires The cladding or inner cladding to be filtered out has a high refractive index, so the pump light and laser in the cladding of a single-clad fiber or the inner cladding of a double-clad fiber will leak into the optical glue to achieve th...

Claims

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Application Information

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IPC IPC(8): H01S3/067H01S3/00
Inventor 何兵刘厚康范元媛郑寄托周军
Owner SHANGHAI FEIBO LASER TECH CO LTD
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