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A Method of Leaking Cladding Light in Double-clad Optical Fiber

A technology of double-clad fiber and cladding light, which is applied in the direction of cladding fiber, multi-layer core/cladding fiber, optical waveguide coupling, etc. Problems such as temperature rise, to achieve the effect of high leakage power, simple production, and short leakage length

Active Publication Date: 2018-03-13
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the existing method of leaking cladding light in the double-clad optical fiber or the existence of which causes the temperature of the fiber to rise sharply and even burns the optical fiber, or the efficiency of leaking cladding light is low, or there is a need for high-precision control and relatively complicated problems in the fabrication process, and provide a method for leaking cladding light in double-clad fibers

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  • A Method of Leaking Cladding Light in Double-clad Optical Fiber

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specific Embodiment approach 1

[0020] Specific implementation mode one: combine figure 1 Specifically illustrate this embodiment, a kind of method for leaking the cladding light in the double-clad optical fiber described in this embodiment, specifically carry out according to the following steps:

[0021] 1. Selection of leakage section: Select a section on the double-clad optical fiber as the leakage section, which contains chemical reagent corrosion leakage section and high refractive index curing adhesive leakage section, along the propagation direction of light in the double-clad optical fiber, The light first passes through the leakage section corroded by chemical reagents, and then passes through the leakage section of high refractive index curing glue;

[0022] 2. Leakage due to chemical reagent corrosion: First, the coating and outer cladding of the chemical reagent corrosion leakage section are stripped to expose the inner cladding, and then the double-clad optical fiber with the chemical reagent c...

specific Embodiment approach 2

[0032] Specific embodiment two: the difference between this embodiment and specific embodiment one is that the corrosion reagent described in step two is a high-concentration hydrofluoric acid solution or a saturated potassium bifluoride solution; the concentration of the high-concentration hydrofluoric acid solution is More than 40%. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the high-refractive-index curing glue described in Step 3 is a high-refractive-index UV-curing glue. Others are the same as in the first or second embodiment.

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Abstract

The invention relates to a method for leaking cladding light in a double-clad optical fiber. The method solves problems that an existing method for leaking cladding light in a double-clad optical fiber may cause temperature of an optical fiber to rise sharply and even burn the optical fiber, and may be relatively low in cladding light leakage efficiency, and may need high-precision control and complex manufacturing process. The method comprises: 1, selection of a leakage segment; 2, chemical reagent corrosion leakage; 3, high refraction index curing glue leakage coating, so as to complete the method for leaking cladding light in a double-clad optical fiber. The method is used for leaking cladding light in a double-clad optical fiber.

Description

technical field [0001] The present invention relates to a method of leaking cladding light in a double-clad optical fiber. Background technique [0002] Fiber laser has become the focus and frontier of current laser research due to its compact structure, simple maintenance, good heat dissipation effect, high energy, closed optical path, and good beam quality. It has huge development space and application prospects, and is the direction of future laser development. With the deepening of research, the output power of fiber lasers is getting higher and higher. In 2014, Wuhan Raycus reported a 10KW fiber laser. [0003] At present, high-power fiber lasers all use cladding pumping technology, and the fibers used are large-core, double-clad fibers. The principle of cladding pumping technology is to inject pump light into the cladding with a large numerical aperture (about 0.46) in the double-clad fiber structure. The pump light is reflected and transmitted in the cladding, and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/036G02B6/26
Inventor 鞠有伦张振国杨超戴通宇
Owner HARBIN INST OF TECH