Double-sleeve extrusion die for extruding chalcogenide glass optical fiber preform rod and use method

An optical fiber preform and chalcogenide glass technology, which is applied in the field of extrusion molds, can solve the problems of difficult to prepare optical fiber preforms with complex structures, difficult to precisely control the uniformity of the core-to-package ratio, etc., and achieves easy uniformity and uniformity control. Effect

Active Publication Date: 2015-08-05
XUZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the core size is roughly adjusted by the thickness of the two glasses being extruded, the uniformity of the core-to-pack ratio is difficult to precisely control
In addition, this method is difficult to prepare optical fiber preforms with complex structures, such as optical fibers with different core and cladding shapes

Method used

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  • Double-sleeve extrusion die for extruding chalcogenide glass optical fiber preform rod and use method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Example 1: Extrusion of a chalcogenide glass optical fiber preform with a core-to-clad ratio of 4:5.

[0045] In this embodiment, the outlet sections of the inner sleeve nozzle and the outer sleeve nozzle are circular, and the inner diameter ratio is 4:5.

[0046] The extrusion method includes the following steps:

[0047]1) Prepare a chalcogenide glass rod as the fiber core material. The diameter of the chalcogenide glass rod is equal to the inner diameter of the inner sleeve. Ensure that the glass rod is just placed in the inner sleeve. The length of the glass rod is less than the depth of the inner sleeve. 2) Prepare the chalcogenide glass casing as the cladding material. The chalcogenide glass casing is obtained by a common drilling method; the outer diameter of the obtained chalcogenide glass casing is equal to the inner diameter of the outer sleeve, ensuring that the chalcogenide glass casing is just placed In the outer sleeve, the inner diameter of the chalcogen...

Embodiment 2

[0048] Example 2: Extrusion of a chalcogenide glass optical fiber preform with a core-to-clad ratio of 1:15

[0049] In this embodiment, the outlet sections of the inner sleeve nozzle and the outer sleeve nozzle are circular, and the inner diameter ratio is 1:15.

[0050] The extrusion method includes the following steps:

[0051] 1) Prepare a chalcogenide glass rod as the fiber core material. The diameter of the chalcogenide glass rod is equal to the inner diameter of the inner sleeve. Ensure that the glass rod is just placed in the inner sleeve. The length of the glass rod is less than the depth of the inner sleeve. 2) Prepare the chalcogenide glass casing as the cladding material. The chalcogenide glass casing is obtained by a common drilling method; the outer diameter of the obtained chalcogenide glass casing is equal to the inner diameter of the outer sleeve, ensuring that the chalcogenide glass casing is just placed In the outer sleeve, the inner diameter of the chalcog...

Embodiment 3

[0052] Embodiment 3: Extrusion of chalcogenide glass optical fiber preforms whose core wrapping shapes are circular and regular hexagonal respectively.

[0053] In this embodiment, the outlet section of the inner sleeve nozzle is circular, and the outlet section of the outer sleeve nozzle is a regular hexagon.

[0054] The extrusion method includes the following steps:

[0055] 1) Prepare a chalcogenide glass rod as the fiber core material. The diameter of the chalcogenide glass rod is equal to the inner diameter of the inner sleeve. Ensure that the glass rod is just placed in the inner sleeve. The length of the glass rod is less than the depth of the inner sleeve. 2) Prepare the chalcogenide glass casing as the cladding material. The chalcogenide glass casing is obtained by a common drilling method; the outer diameter of the obtained chalcogenide glass casing is equal to the inner diameter of the outer sleeve, ensuring that the chalcogenide glass casing is just placed In the...

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Abstract

The invention discloses a double-sleeve extrusion die for extruding a chalcogenide glass optical fiber preform rod and a use method. The double-sleeve extrusion die comprises an outer sleeve, an inner sleeve, a splitter and a piston, wherein the inner sleeve is positioned in the outer sleeve, an outer sleeve nozzle and an inner sleeve nozzle are arranged at the bottoms of the outer sleeve and the inner sleeve respectively, the splitter is provided with a circular plate with a plurality of through holes, the through holes include a center hole and a plurality of peripheral holes formed in the periphery of the center hole, the splitter is arranged at the bottom of the outer sleeve, the inner sleeve nozzle is inserted into the center hole in the splitter, an annular groove matched with the inner sleeve is formed in the piston, so that the piston is right arranged in annular cavity between the outer sleeve and the inner sleeve and an inner cavity of the inner sleeve. The double-sleeve extrusion die can extrude chalcogenide glass optical fiber preform rods with the specific core package proportion and a shape of a specific core clad shape.

Description

technical field [0001] The invention relates to an extrusion die for preparing optical fiber preform rods, in particular to a double-sleeve extrusion die for extruding chalcogenide glass optical fiber preform rods and a use method thereof. Background technique [0002] Chalcogenide glass has excellent mid-infrared transmittance, high linear and nonlinear refractive index, and low phonon energy. Therefore, chalcogenide glass fiber has great potential in the fields of infrared signal and laser transmission, nonlinear optics, and mid-infrared laser. Important application background and potential. At present, the preparation processes of chalcogenide glass optical fibers mainly include double crucible method, rod and tube method and stacking extrusion method. [0003] The double-crucible device is composed of two quartz crucibles. The core and cladding materials are placed in the two crucibles respectively. By adjusting the outlet size of the crucible and the gas pressure, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/012
Inventor 杨志勇任和张斌杨安平陶海征祖成奎刘永华唐定远
Owner XUZHOU NORMAL UNIVERSITY
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