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A kind of single-mode chalcogenide glass optical fiber and its manufacturing method

A single-mode optical fiber and glass technology, applied in glass manufacturing equipment, clad optical fiber, multi-layer core/clad optical fiber, etc., can solve the problems of large interface loss and difficult control of core-to-diameter ratio, and reduce impurities and air bubbles loss, avoidance of bubble streaks, high optical quality effects

Inactive Publication Date: 2015-12-16
苏州佳因特光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention solves the problems of large interface loss and difficulty in controlling the core-diameter ratio in the production process of the existing chalcogenide glass optical fiber.

Method used

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  • A kind of single-mode chalcogenide glass optical fiber and its manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] The core rod glass composition is: 40As60Se, and the cladding glass composition is: 39.5As60Se0.5S.

[0040] Put high-purity raw materials (more than 99.999%) As, S, Se in the quartz container after dehydroxylation cleaning according to the ratio, and synthesize chalcogenide glasses with the above-mentioned composition according to the method described in technical solution step A, and choose an inner diameter of 10mm, A quartz tube with an outer diameter of 12mm is added with cladding glass, and the glass-clad casing is prepared by the method described in Technical Scheme B, and the weight of the added glass frit is controlled by calculation and weighing to prepare a casing with an inner diameter of 2mm and an outer diameter of 10mm The chalcogenide glass casing; weigh the core rod glass, prepare the chalcogenide glass core rod by the method described in step C, pull out a thin rod with a diameter of about 1.95mm through a wire drawing machine, insert it into the claddi...

Embodiment 2

[0042] The composition of the core rod glass is: 40As60S, the composition of the first cladding glass is: 39.5As0.5Se60S, and the composition of the second cladding glass is: 39As1Se60S.

[0043] The glass preparation method is the same as in Example 1; a quartz tube with an inner diameter of 15 mm and an outer diameter of 18 mm is selected to prepare a cladding glass sleeve, and the cladding glass is weighed according to volume calculation to prepare a glass sleeve with an inner diameter of the sleeve pipe of 3 mm and an outer diameter of 15 mm tube; prepare the core rod according to step C, draw a glass core rod with a diameter of 2.95 mm through a wire drawing machine, and combine it with the cladding sleeve to form a preform rod, and the core diameter ratio is about 1:5; by stretching again, it can be obtained Ultra-fine single-mode double-clad chalcogenide glass fiber with a core-to-diameter ratio of 1:25.

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Abstract

The invention relates to the technical field of a glass optical fiber material and a preparation method thereof, and especially relates to a single-mode chalcogenide infrared glass optical fiber and preparation method thereof. The optical fiber has the characteristics that: an As-S-Se infrared glass system is adopted as a coating layer, and an As-Se infrared glass system is adopted as a core layer. During a process for preparing an optical fiber preform rod, a coating sleeve pipe is prepared with a vacuum sealed rotary method; core-layer glass is prepared through vacuum sealed annealing; the core-rod glass rod is inserted into the coating sleeve pipe, and a core rod with a coating is prepared by using a wire-drawing machine; the core rod is inserted into the coating sleeve pipe again, and the single-mode optical fiber is prepared with a repeated drawing method. Through the regulation upon the composition of the coating glass, multi-coating chalcogenide glass optical fiber can be conveniently prepared. With the method, the prepared optical fiber has the advantages of controllable core-coating ratio; no defect such as impurity, bubble, or line on core-coating layer interface; high core-coating layer concentricity; and low optical loss.

Description

technical field [0001] The invention relates to a chalcogenide infrared single-mode optical fiber and a manufacturing method thereof, belonging to the technical field of glass optical fiber manufacturing. In particular, it relates to the composition and manufacturing process of glass optical fibers. Background technique [0002] Due to multiphonon absorption, the use of silica and fluoride fibers is limited to 2 and 3 microns, respectively. The phonon energy of chalcogenide glass is about 300-350 wave numbers, which is much lower than that of oxide glass (~1100 wave number) and fluoride glass (~550 wave number), which effectively reduces the probability of multi-phonon absorption, so that the transmission of chalcogenide optical fiber range beyond 12 microns. The unique infrared transmission performance of chalcogenide optical fiber makes it have a wide range of application values ​​in many fields, including: optical fiber communication, infrared detection, chemical sensin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/012C03B37/027G02B6/036
CPCC03B37/01211C03B2201/86
Inventor 汪国年
Owner 苏州佳因特光电科技有限公司
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