A high numerical aperture all-solid-state fluorotellurite glass optical fiber, preparation method and application thereof

A high numerical aperture, fluorotellurite technology, applied in glass manufacturing equipment, clad optical fiber, optics, etc., can solve the problems of increased fiber loss and shortened life of related devices

Active Publication Date: 2019-09-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as time goes on, water vapor or dust in the air may adhere to the surface of the fiber core through the air holes, resulting in an increase in fiber loss and shortening the life of related devices.

Method used

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  • A high numerical aperture all-solid-state fluorotellurite glass optical fiber, preparation method and application thereof
  • A high numerical aperture all-solid-state fluorotellurite glass optical fiber, preparation method and application thereof
  • A high numerical aperture all-solid-state fluorotellurite glass optical fiber, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 1: Preparation of high NA all-solid-state fluorotellurite glass optical fiber

[0031] A high numerical aperture all-solid-state fluorotellurite glass fiber, such as figure 1As shown, including the core and cladding, wherein the material of the core is barium tellurium yttrium (TBY), the diameter of the core is 7 μm, which is made of TeO 2 、BaF 2 , Y 2 o 3 Composition, the mole percentage of each component is: TeO 2 70%, BaF 2 20%, Y 2 o 3 10%; the cladding material is aluminum magnesium calcium strontium barium yttrium tellurium (AMCSBYT), the thickness is 100μm, which is made of AlF 3 , MgF 2 , CaF 2 , SrF 2 、BaF 2 , YF 3 , TeO 2 Composition, the mole percentage of each component is: AlF 3 29%, MgF 2 9%, CaF 2 17%, SrF 2 8.5%, BaF 2 8.5%, YF 3 13%, TeO 2 10%;

[0032] A method for preparing a high numerical aperture all-solid-state fluorotellurite glass optical fiber, the specific steps are as follows:

[0033] (1) According to th...

Embodiment 2

[0036] Example 2: Application of preparation of high-NA all-solid-state fluorotellurite glass optical fiber in high-power supercontinuum light source

[0037] use Figure 7 The device shown is used to test the prepared ultra-high NA all-solid-state fluorotellurite glass optical fiber. The pump source 1 is a 2 μm femtosecond fiber laser. After the pump light passes through the isolator 2, it is coupled into the fluorotellurite glass fiber 4 prepared by us through the lens group 3. The final output spectrum and power are obtained by the spectrum analyzer 5 monitor. Due to the large difference in refractive index between the two component glasses (TBY glass: n=~1.84@2μm, AMCSBYT glass: n=~1.46@2μm), the calculated NA of the optical fiber at 2μm is ~1.1. In the experiment, we used a 60cm-long high-NA all-solid-state fluorotellurite glass fiber as the nonlinear medium. When the pump power was ~10.5W, we obtained a supercontinuum light source with an average power of 4.5W and a sp...

Embodiment 3

[0038] Example 3: Application of tapered high-NA all-solid-state fluorotellurite glass fiber in broadband supercontinuum light source

[0039] The ultra-high NA all-solid-state fluorotellurite glass optical fiber prepared in Example 1 was tapered with an optical fiber tapering machine. The taper length of the prepared tapered optical fiber is ~1.8 cm, and the core diameter of the optical fiber is reduced from 7 μm to 1.4 μm. Figure 9 The relationship between the core diameter and the position of the tapered fluorotellurite glass fiber we made is given, as well as the calculated group velocity dispersion curves of the fundamental mode in the fluorotellurite glass fiber with different core diameters. Using this tapered fluorotellurite glass fiber as a nonlinear medium, Figure 7 The device shown was used to test it. The pump source 1 is a 1.56 μm femtosecond fiber laser. After the pump light passes through the isolator 2, it is coupled into the tapered fluorotellurite glass f...

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Abstract

The invention discloses a high-numerical-aperture all-solid-state fluorotellurite glass optical fiber, as well as a preparation method and application thereof, and belongs to the technical field of special glass optical fibers. The high-numerical-aperture all-solid-state fluorotellurite glass optical fiber comprises a fiber core and a cladding layer, wherein the fiber core is made of tellurium yttrium barium (TBY), the diameter of the fiber core is 0.5 to 100 microns, and the fiber core comprises TeO2, BaF2 and Y2O3; and the cladding layer is made of aluminum magnesium calcium strontium barium yttrium tellurium (AMCSBYT), the thickenss is 1 to 200 microns, and the cladding layer comprises AlF3, MgF2, CaF2, SrF2, BaF2, YF3 and TeO3. The matrix glass is molten in a glove box protected by nitrogen, so that the low hydroxyl content of the prepared glass sample is guaranteed, and the optical fiber is prepared with a rod tube method. The prepared optical fiber has relatively high numerical aperture and relatively low limited loss. The chromatic dispersion and the non-linearity of the optical fiber can be regulated and controlled on a large scale by changing the core diameter size of the optical fiber. The optical fiber serves as a non-linear medium, and an intermediate infrared super-continuous light source with spectral bandwidth coverage being 0.35 to 5.5 microns and output average power being tens of watts can be obtained.

Description

technical field [0001] The invention belongs to the technical field of special glass optical fibers, and in particular relates to a high numerical aperture (NA) all-solid-state fluorotellurate glass optical fiber, a preparation method and its application in the production of an all-fiber high-power broadband mid-infrared supercontinuum light source. Background technique [0002] In recent years, the 2-5 μm mid-infrared supercontinuum fiber light source has very important applications in optical communication, optical sensing, medical treatment, military and other fields. In order to meet the needs of many applications, researchers have been working on obtaining high-power broadband mid-infrared light sources. Recently we explored a component called TeO 2 -BaF 2 -Y 2 o 3 fluorotellurite glass. The glass has a wide transmission window (0.4-6 μm), and better thermal and chemical stability. In addition, the transition temperature of the glass is ~425 °C, which is higher th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C13/04C03B37/012C03B37/027G02B6/02G02B1/00
Inventor 秦冠仕贾志旭秦伟平姚传飞王顺宾贾世杰
Owner JILIN UNIV
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