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Preparation method of coating layer D-shaped phosphate microstructure band-gap type optical fiber

A phosphate and microstructure technology, applied in glass manufacturing equipment, glass fiber products, manufacturing tools, etc., to achieve the effect of good beam confinement and avoid processing difficulties

Inactive Publication Date: 2013-08-21
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] N31 neodymium-doped phosphate glass is an excellent laser fiber material. Its excellent emission cross-section, luminous performance and oblique efficiency make it play a huge role in Shenguang. Structural bandgap fibers are rarely reported and studied

Method used

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  • Preparation method of coating layer D-shaped phosphate microstructure band-gap type optical fiber
  • Preparation method of coating layer D-shaped phosphate microstructure band-gap type optical fiber
  • Preparation method of coating layer D-shaped phosphate microstructure band-gap type optical fiber

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Embodiment 1

[0029] Example 1# of the preparation method of the coating layer D-shaped phosphate microstructure bandgap optical fiber, the method includes the following steps:

[0030] ①Preparation of phosphate solid-core capillary rod: use phosphate glass, process the phosphate glass into a phosphate glass rod with a diameter of d≤18mm and a length of L≤150mm, place it in a wire drawing machine and heat it up to its drawing temperature of 565°C , draw d=1mm and a part of phosphate solid core capillary rods with d<1mm;

[0031] ②Preparation of neodymium-doped phosphate solid capillary rods: use neodymium-doped phosphate glass to process neodymium-doped phosphate glass rods with a diameter of d≤18mm and a length of L≤150mm, and place them in a wire drawing machine to raise the temperature to a drawing temperature of 560°C , draw d=1mm and a part of phosphate solid core capillary rods with d<1mm;

[0032] ③Pipeline: such as figure 1 As shown, first place the phosphate capillary rods 2 in t...

Embodiment 2

[0037] The differences between the preparation parameters of Example 2# to Example 6# and Example 1# are shown in Table 1, and the structures observed under a microscope are similar, so I will not repeat them here.

[0038] Experiments show that the D-shaped optical fiber pulled out by the present invention has high coupling efficiency to pump light, and has a 1053nm fluorescence spectrum of 8400a.u under the excitation of a semiconductor pump source in the 793nm band. The test laser output reaches 460mW, and the beam quality is good. This method is suitable for the preparation and application of 1053nm doped rare earth ion phosphate laser glass fiber material.

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Abstract

The invention relates to a preparation method of a 1053-nanometer neodymium-doped phosphate D-shaped microstructure band-gap type optical fiber, and the preparation method comprises the following steps of: preparing phosphate solid capillarity rod; preparing a neodymium-doped phosphate solid capillarity rod; arraying tubes; sintering; carrying out wire drawing, and the like. The drawn D-shaped optical fiber has the advantages of obvious band-gap microstructure, good light ray binding force and high coupling efficiency and achieves the laser output by 460 mW.

Description

technical field [0001] The invention relates to a special-shaped microstructure bandgap optical fiber, in particular to a preparation method of a coating layer D-shaped phosphate microstructure bandgap optical fiber. Background technique [0002] Phosphate glass has moderate phonon energy, high solubility to rare earth ions, good spectral performance of rare earth ions in it, and high stimulated emission cross section σ em , low nonlinear refractive index n 2 , The preparation process is mature, so it has good laser performance, and it is the main gain amplification medium for laser nuclear fusion. At the same time, phosphate glass fiber has a high stimulated Brillouin (SBS) threshold and no photodarkening phenomenon, so it has unique advantages in single-frequency fiber lasers and high-power fiber amplifiers. [0003] Rare earth-doped fiber laser has compact and stable structure, excellent heat dissipation performance, good mode performance and high energy conversion effi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/01C03B37/012C03B37/027C03C25/32
CPCC03B2203/02C03B37/0122
Inventor 黄义王欣李文涛于春雷张磊陈伟胡丽丽
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI