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Near-infrared luminescence bismuth-doped multi-component fiber and preparation method

A near-infrared, multi-component technology, applied in clad optical fiber, optical waveguide and light guide, etc., to achieve the effect of avoiding bismuth volatilization

Active Publication Date: 2015-11-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are currently no reports of bismuth-doped multi-component glass fibers that can emit near-infrared light and can be prepared by the tube-and-rod method.

Method used

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  • Near-infrared luminescence bismuth-doped multi-component fiber and preparation method
  • Near-infrared luminescence bismuth-doped multi-component fiber and preparation method

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Embodiment

[0032] The preparation process of the near-infrared luminescent bismuth-doped multi-component optical fiber of this embodiment is as follows:

[0033] (1) Using lanthanum oxide, yttrium oxide, lutetium oxide, gallium oxide, indium oxide, barium carbonate, bismuth oxide, and germanium oxide as raw materials, using the traditional melting-quenching method, the optical fiber core glass described in Table 1 The bulk glass samples were prepared separately from the molar composition of the cladding glass and the melting process conditions; the glass samples were annealed according to the annealing process described in Table 1 to eliminate the residual stress in the glass and prevent the glass from breaking during processing.

[0034] (2) Processing the cladding and core glass prepared in the step (1) into a rod shape and polishing respectively.

[0035] (3) Drill a hole in the center of the clad glass rod along the axial direction, and polish the inner wall of the hole.

[0036] (4...

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Abstract

The invention discloses a near-infrared luminescence bismuth-doped multi-component fiber, comprising fiber core glass and cladding glass. The fiber core glass comprises La2O3,Y2O3, Lu2O3,Ga2O3, In2O3, BaO, Bi2O3, and GeO2; and the cladding glass comprises La2O3,Y2O3, Lu2O3,Ga2O3, In2O3, BaO, and GeO2. The invention also discloses a near-infrared luminescence bismuth-doped multi-component fiber preparation method which employs the rod-in-tube technique for preparation. The fiber can be prepared under a low temperature, avoid bismuth volatilization, and realize bismuth high density doping and high efficiency luminescence; an optimum doping concentration is 5-7 mol%, which is three magnitude orders higher than the bismuth doping concentration in a quartz optical fiber; the fiber covers 1000-1600 nm, and has a luminescence half-width greater than 200 nm.

Description

technical field [0001] The invention relates to the field of optical fiber preparation, in particular to a near-infrared luminescent bismuth-doped multi-component optical fiber and a preparation method. Background technique [0002] Bismuth-doped optical fiber is a new type of active glass optical fiber with broadband near-infrared luminescence, which can realize tunable laser output in the infrared 1-1.6 micron band. Bismuth optical fibers reported so far are bismuth-doped silica optical fibers, prepared by metal organic chemical vapor deposition (MOCVD). But this preparation method must be carried out at a high temperature exceeding 2000 degrees, otherwise the quartz cannot be softened and the optical fiber cannot be made. Such a high temperature will cause a large amount of volatilization of bismuth, so the bismuth silica optical fiber produced has a low bismuth doping concentration of only 50ppm, low gain, and the fluorescence half-maximum width is generally 100-150nm, ...

Claims

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Application Information

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IPC IPC(8): G02B6/02
CPCG02B6/02
Inventor 彭明营郑嘉裕
Owner SOUTH CHINA UNIV OF TECH
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