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A low-cost batch preparation method and system for multi-material and multi-structure mid-infrared optical fibers

An infrared light, multi-material technology, applied in the field of low-cost batch preparation of mid-infrared optical fibers and low-cost batch preparation of mid-infrared low-loss optical fibers, can solve the problem of uncontrollable core-cladding ratio, excessive use of materials, and core-clad interface. Defects and other problems, to achieve the effect of good core-package interface, structure and size reduction

Active Publication Date: 2021-08-27
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0014] In view of the above defects or improvement needs of the prior art, the present invention provides a low-cost batch preparation method and system for multi-material and multi-structure mid-infrared optical fibers, which realizes the control of fiber shape and structure by designing the structure of the double crucible , the initial preform is prepared by double crucible, and the initial preform is used as the basic structure, combined with high-performance polymer film winding method to prepare multi-material and multi-structure mid-infrared optical fiber preform, and a batch of high-quality Flexible multi-material multi-structure low-loss mid-infrared optical fiber, thereby solving the problems of core-clad interface defects, impurity introduction and cumbersome preparation process in the preparation of mid-infrared optical fiber by the existing optical fiber thermal drawing method, and the existing double-crucible method of chalcogenide glass optical fiber Single structure, limited materials, uncontrollable ratio of core cladding, excessive use of materials

Method used

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  • A low-cost batch preparation method and system for multi-material and multi-structure mid-infrared optical fibers
  • A low-cost batch preparation method and system for multi-material and multi-structure mid-infrared optical fibers
  • A low-cost batch preparation method and system for multi-material and multi-structure mid-infrared optical fibers

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preparation example Construction

[0052] A batch preparation method of a multi-material and multi-structure mid-infrared optical fiber provided by the present invention comprises the following steps:

[0053] (1) The initial mid-infrared optical fiber preform with a core-clad structure is prepared by a double-crucible method;

[0054] (2) The polymer film is wound on the outer surface of the initial mid-infrared optical fiber preform obtained in step (1) by the film winding method, and after vacuum curing, a glass core layer, a glass cladding layer and a polymer cladding layer are obtained in sequence from the inside to the outside. Multi-layer mid-infrared optical fiber preform;

[0055] (3) Thermally drawing the multi-material and multi-structure mid-infrared optical fiber preform obtained in step (2) to obtain the multi-material mid-infrared optical fiber.

[0056] In some embodiments, step (1) includes the following sub-steps:

[0057] (1-1) Fill the granular high-refractive-index glass and granular low-...

Embodiment 2

[0113] Embodiment 2 of the present invention provides a method for preparing a multi-material, multi-structure, low-loss mid-infrared optical fiber based on a new type of double crucible, including: making an initial preform from a double crucible, and making a multi-material, multi-structure mid-infrared optical fiber by a high-performance polymer film winding method Multi-material and multi-structure low-loss mid-infrared optical fiber prepared by preform and hot drawing method.

[0114] (1) Initial preform made of double crucibles

[0115] Chalcogenide glass As in an agate mortar 3 S 7 with As 35 S 65 Grind into granular state, separate the As 35 S 65 with As 3 S 7 Fill the inner crucible and the outer crucible, and select the vacuum fitting interface matching the new double crucible, and use flange sealing to seal the top of the new double crucible with two kinds of chalcogenide glass materials, As 3 S 7 The glass charge is 1000g, As 35 S 65 The glass charge is ...

Embodiment 3

[0121] Embodiment 3 of the present invention provides a method for preparing a multi-material, multi-structure, low-loss mid-infrared optical fiber based on a new type of double crucible, including: making an initial preform rod from a double crucible, and manufacturing a multi-material, multi-structure mid-infrared optical fiber by a high-performance polymer film winding method Multi-material and multi-structure low-loss mid-infrared optical fiber prepared by preform and hot drawing method.

[0122] (1) Initial preform made of double crucibles

[0123] Using an agate mortar, the chalcogenide glass Ge 20 As 20 Se 15 Te 45 with Ge 20 As 20 Se 18 Te 42 Grind into granular state, separate the Ge 20 As 20 Se 15 Te 45 with Ge 20 As 20 Se 18 Te 42 Fill the inner crucible and the outer crucible, and select the vacuum fitting interface matching the new double crucible, and use flange sealing to seal the top of the new double crucible with two kinds of chalcogenide glass...

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Abstract

The invention belongs to the technical field of multi-material and multi-structure mid-infrared optical fiber preparation, and more specifically relates to a low-cost batch preparation method and system for mid-infrared optical fiber with adjustable materials and structures. The shape of the fiber is controlled through the structural design of the crucible, and the initial preform is prepared by the double-crucible method, and the initial preform is used as the basic structure, combined with the high-performance polymer film winding method to prepare a multi-material, multi-structure mid-infrared optical fiber prefabrication Rods, and a batch of highly flexible multi-material, multi-structure, low-loss mid-infrared optical fibers prepared by hot drawing method, thus solving the problems of core-clad interface defects, impurity introduction and The preparation process is cumbersome, and the existing double-crucible chalcogenide glass optical fiber has a single structure, limited materials, uncontrollable core-cladding ratio, and high cost caused by a high amount of chalcogenide glass.

Description

technical field [0001] The invention belongs to the technical field of multi-material mid-infrared optical fiber preparation, more specifically, relates to a low-cost batch preparation method and system for mid-infrared optical fibers, especially to a low-cost batch preparation of multi-material and multi-structure mid-infrared low-loss optical fibers methods and systems. Background technique [0002] Chalcogenide glass mid-infrared optical fiber refers to the mid-infrared optical fiber composed of chalcogenide glass. Due to the excellent optical properties of chalcogenide glass in the infrared band and the many molecular absorption peaks in the infrared band itself, this type of optical fiber is used in the mid-infrared laser It is widely used in transmission, mid-infrared laser sensing, mid-infrared laser processing and other fields. Furthermore, with CO 2 The upper power limit of lasers and QCL lasers has been increased, and the output wavelength range has become wider....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/027C03B37/012
CPCC03B37/01274C03B37/027C03B2203/04C03B2203/12C03B2203/32
Inventor 陶光明徐文鑫任志禾
Owner HUAZHONG UNIV OF SCI & TECH
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