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Germanate-tellurite glass for double-clad fiber and preparation method of fiber

A tellurite glass and double-clad optical fiber technology, applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problem of not covering germanium tellurate glass, and achieve the effect of saving raw materials, good thermal properties, and excellent spectral properties

Active Publication Date: 2014-10-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation of optical fiber preforms by the stacking method is simple and fast, and can avoid the pollution caused by the optical processing of the preforms prepared by the general tube rod method, and the stacking method can achieve a suitable core-to-wrap ratio, and single-mode double-package can be obtained by one-time drawing layer fiber (patent application number: 201310511894.6, but the patent does not cover germanium tellurate glass)

Method used

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  • Germanate-tellurite glass for double-clad fiber and preparation method of fiber
  • Germanate-tellurite glass for double-clad fiber and preparation method of fiber
  • Germanate-tellurite glass for double-clad fiber and preparation method of fiber

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. The composition (mol) of the fiber core is: GeO 2 :60, TeO 2 :15, PbO:10, SrO:4, Al 2 o 3 :10,Nb 2 o 5 :1,Tm 2 o 3 :2;

[0036] 2. The composition (mol) of the inner cladding is: GeO 2 :60, TeO 2 :15, PbO:10, SrO:5, Al 2 o 3 :10;

[0037] 3. The composition (mol) of the outer cladding is: GeO 2 :65, TeO 2 :10, PbO:10, SrO:5, Al 2 o 3 :10;

[0038] 4. Mix the raw materials required for the core glass evenly, put them into a platinum crucible to melt and clarify at 1150°C, and stir the molten glass for 40 minutes. Then pour the molten glass into a preheated cylindrical metal mold, anneal in a tube furnace near the glass transition temperature for 6 hours, then turn off the power and cool down with the furnace to obtain a round rod-shaped core glass.

[0039] 5. The preparation methods of inner cladding glass, outer cladding glass and core glass are exactly the same.

[0040] 6. Polish and clean the outer wall of the obtained round rod-shaped glass, an...

Embodiment 2

[0043] 1. The composition (mol%) of the fiber core is: GeO 2 :30, TeO 2 :55, PbO:10, CaO:3, Al 2 o 3 :1,Nb 2 o 5 :1,Tm 2 o 3 :0.5;

[0044] 2. The composition (mol%) of the inner cladding is: GeO 2 :30, TeO 2 :55, PbO:10, CaO:4, Al 2 o 3 :1;

[0045] 3. The composition (mol%) of the outer cladding is: GeO 2 :35, TeO 2 :50, PbO:10, CaO:4, Al 2 o 3 :1;

[0046] 4. Mix the raw materials required for the core glass evenly, put them into a platinum crucible to melt and clarify at 950°C, and stir the molten glass for 20 minutes. Then pour the molten glass into a preheated cylindrical metal mold, anneal in a tube furnace near the glass transition temperature for 6 hours, then turn off the power and cool down with the furnace to obtain a round rod-shaped core glass.

[0047] 5. The preparation methods of inner cladding glass, outer cladding glass and core glass are exactly the same.

[0048] 6. Polish and clean the outer wall of the obtained round rod-shaped glass, a...

Embodiment 3

[0051] 1. The composition (mol%) of the fiber core is: GeO 2 :38, TeO 2 : 17, PbO: 30, SrO: 10, Al 2 o 3 :2,Nb 2 o 5 :3,Tm 2 o 3 :1;

[0052] 2. The composition (mol%) of the inner cladding is: GeO 2 :42, TeO 2 :15, PbO:29, SrO:10, Al 2 o 3 :2,Nb 2 o 5 :2;

[0053] 3. The composition (mol%) of the outer cladding is: GeO 2 :47, TeO 2 :13, PbO:27, SrO:10, Al 2 o 3 :3;

[0054] 4. Mix the raw materials required for the core glass evenly, put them into a platinum crucible to melt and clarify at 1050°C, and stir the molten glass for 25 minutes. Then pour the molten glass into a preheated cylindrical metal mold, anneal in a tube furnace near the glass transition temperature for 6 hours, then turn off the power and cool down with the furnace to obtain a round rod-shaped core glass. Conduct thermal property test and spectrum test on the core glass, the results are as follows figure 2 and image 3 shown.

[0055] 5. The preparation method of the inner cladding gl...

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PUM

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Abstract

The invention provides germanate-tellurite glass for double-clad fiber and a preparation method of the fiber. The germanate-tellurite glass for the double-clad fiber comprises thulium doped fiber core glass, inner clad glass and outer clad glass. An optical fiber preform provided with a hexagonal inner clad is prepared with a stacking method, the fiber which is the double-clad fiber provided with the hexagonal inner clad is formed by wire drawing once in a wire drawing tower. The fiber integrates advantages of germanate glass and tellurite glass; the glass contains Al2O3, has better thermal properties and more excellent spectral properties; and by means of the thulium doped fiber core, minus 2 mu m laser output can be achieved.

Description

technical field [0001] The invention relates to a double-clad optical fiber, in particular to a germanium tellurate glass for a double-clad optical fiber and a preparation method for the optical fiber. Background technique [0002] Compared with solid-state lasers and semiconductor lasers, fiber lasers have the advantages of small size, high beam quality, and easy integration, and have become the main research direction of solid-state lasers. Eye-safe ~2μm band lasers and laser materials have received more and more attention and research in the fields of medical treatment, military reconnaissance and atmospheric monitoring. [0003] The laser output is first obtained in the crystal. However, compared with the crystal, the large-size glass has a simple process and is easy to draw into an optical fiber to make a fiber laser with excellent performance, so it has received more and more attention. However, the solubility of rare earth ions in quartz glass is low, and the phonon ...

Claims

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Application Information

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IPC IPC(8): C03C13/04C03B37/012
CPCC03C3/122C03C3/253C03C4/12C03C13/048
Inventor 高松胡丽丽廖梅松薛天峰王龙飞关珮雯李夏
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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