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A kind of selenium-based sulfur halide glass optical fiber and preparation method thereof

A technology of sulfur-halide glass and optical fiber, which is applied in the field of selenium-based sulfur-halide glass fiber and its preparation, can solve the problems of application limitation, inability to broaden supercontinuum, etc., and achieves the effects of high third-order nonlinear coefficient, low cost, and environmental friendliness.

Active Publication Date: 2020-09-01
杭州长波红外科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the infrared cut-off wavelength of the existing selenium-based glass fiber is less than 12 μm, so that the supercontinuum obtained in the fiber cannot be broadened to >12 μm, and the application is limited

Method used

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  • A kind of selenium-based sulfur halide glass optical fiber and preparation method thereof
  • A kind of selenium-based sulfur halide glass optical fiber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Ga 0.08 Sb 0.38 Se 0.50 I 0.04 / Ga 0.08 Ge 0.02 Sb 0.36 Se 0.44 I 0.10 Fiber preparation

[0025] The vacuum melting-quenching method commonly used for preparing thiohalide glasses was used to prepare Ga with a diameter of 10 mm. 0.08 Sb 0.38 Se 0.50 I 0.04 Core glass rod and 15mm diameter Ga 0.08 Ge 0.02 Sb 0.36 Se 0.44 I 0.10 Cladding glass rod; put the fiber core glass rod in 295 o C is drawn into a core glass rod with a diameter of 2.3mm; two cladding glass rods are drilled along the central axis respectively to obtain a clad glass sleeve with an inner diameter of 2.3 mm, and the inner wall of the clad glass sleeve is polished; The core glass rod is inserted into one of the cladding glass sleeves. o C is drawn into a secondary thin rod with a diameter of 2.3mm; the secondary thin rod is inserted into another cladding glass sleeve, at 295 o C is drawn into an optical fiber with a diameter of 250 μm, the corresponding core diameter is about 6 μm, and the obtain...

Embodiment 2

[0027] Example 2: Ga 0.08 Sb 0.35 Se 0.49 I 0.08 / Ga 0.08 Ge 0.02 Sb 0.33 Se 0.53 I 0.04 Fiber preparation

[0028] The vacuum melting-quenching method commonly used for preparing thiohalide glasses was used to prepare Ga with a diameter of 10 mm. 0.08 Sb 0.35 Se 0.49 I 0.08 Core glass rod and 15mm diameter Ga 0.08 Ge 0.02 Sb 0.33 Se 0.53 I 0.04 Cladding glass rod; put the fiber core glass rod in 290 o C is drawn into a core glass rod with a diameter of 2.3 mm; two cladding glass rods are drilled along the central axis to obtain a cladding glass sleeve with an inner diameter of 2.3 mm, and the inner wall of the cladding glass sleeve is polished; The core glass rod is inserted into one of the cladding glass sleeves, at 290 o C is drawn into a secondary thin rod with a diameter of 2.3 mm; the secondary thin rod is inserted into another cladding glass sleeve, at 290 o C is drawn into an optical fiber with a diameter of 340 μm, and the corresponding core diameter is about 8 μm.

[002...

Embodiment 3

[0030] Example 3: Ga 0.08 Sb 0.32 Se 0.50 I 0.10 / Ga 0.08 Ge 0.02 Sb 0.30 Se 0.52 I 0.08 Fiber preparation

[0031] The vacuum melting-quenching method commonly used for preparing thiohalide glass was used to prepare Ga with a diameter of 10 mm. 0.08 Sb 0.32 Se 0.50 I 0.10 Core glass rod and 15mm diameter Ga 0.08 Ge 0.02 Sb 0.30 Se 0.52 I 0.08 Cladding glass rod; put the fiber core glass rod in 285 o C is drawn into a thin core glass rod with a diameter of 2.6 mm; the two clad glass rods are drilled along the central axis to obtain a clad glass sleeve with an inner diameter of 2.6 mm, and the inner wall of the clad glass sleeve is polished; The core glass rod is inserted into one of the cladding glass sleeves, at 285 o C is drawn into a secondary thin rod with a diameter of 2.6 mm; the secondary thin rod is inserted into another cladding glass sleeve, at 285 o C is drawn into an optical fiber with a diameter of 400 μm, and the corresponding core diameter is about 12 μm.

[0032] T...

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Abstract

The invention discloses a selenium-based chalcohalide glass optical fiber and a preparation method thereof. The optical fiber consists of a fiber core and a cladding layer, wherein the fiber core is made of Ga-Sb-Se-I glass having a chemical composition formula of Ga0.08SbxSe(0.92-x-y)Iy, wherein x is equal to 0.32 to 0.38, and y is equal to 0.04 to 0.10; the cladding layer is made of Ga-Ge-Sb-Se-I glass having a chemical composition formula of Ga0.08Ge0.02SbmSe(0.90-m-n)In, wherein m is equal to 0.30 to 0.36, and n is equal to 0.04 to 0.10. The optical fiber is prepared by a rod in tube method. A numerical aperture of the optical fiber disclosed by the invention is more than or equal to 0.4; a zero dispersion wavelength of the optical fiber is between 4.2 to 6.0 [mu]m, a nonlinear coefficient is more than 105 / W / km, and a transmission spectrum range is 1.5 to 14 [mu]m, so that the optical fiber can be used as a high-performance nonlinear medium to generate an ultra wide band mid-infrared hypercontinuous spectrum; the preparation process is simple.

Description

Technical field [0001] The invention belongs to the field of infrared nonlinear optical materials, and relates to a thiohalide glass optical fiber, in particular to a selenium-based thiohalide glass optical fiber and a preparation method thereof. Background technique [0002] Chalcogenide glass is an amorphous material based on chalcogen elements (S, Se, Te), including S-based, Se-based and Te-based glass, and their typical light transmission ranges are 0.6~10 μm, 1 ~14 μm and 2-20 μm, the corresponding optical fiber transmission ranges are 1-8 μm, 1.5-12 μm and 2.5-16 μm, respectively. When halogen elements are introduced into chalcogenide glasses, the glass forming ability will generally increase, and the light transmission range will generally be broadened in the short-wave direction. This type of glass based on chalcogen and halogen elements is called chalcogenide glass. [0003] Chalcogenide and sulfur halide glasses show low loss and extremely high nonlinearity in the mid-in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/32C03B37/027
CPCC03B37/027C03C3/323
Inventor 杨志勇徐甫任和杨安平唐定远
Owner 杭州长波红外科技有限公司