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Preparation method for tellurate glass compound optical fibers

A technology of tellurite glass and composite optical fiber, which is applied in the field of optical fiber, can solve the problems of poor mechanical strength and easy breakage, and achieve the effects of improving mechanical strength, high production efficiency and simple operation

Active Publication Date: 2014-05-07
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

This method solves the problems of poor mechanical strength and easy breakage of the existing tellurate glass optical fiber, and at the same time

Method used

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  • Preparation method for tellurate glass compound optical fibers
  • Preparation method for tellurate glass compound optical fibers
  • Preparation method for tellurate glass compound optical fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 1. Preparation of tellurite glass: core fiber glass 30TeO 2 -40WO 3 -5BaO-15La 2 o 3 -10GeO 2 , cladding glass: 30TeO 2 -38WO 3 -5BaO-15La 2 o 3 -12GeO 2 , according to the mole percentage, and mix them evenly;

[0031] 2. Then put it into a platinum or gold crucible for melting, the melting temperature is 1100°C, then pour it into a preheated steel mold, put it into an annealing furnace, and heat it at T g Keep warm near the point for 5 hours, then drop to 100°C at 1°C / hour, then turn off the power of the annealing furnace, and let it cool down to room temperature naturally;

[0032] 3. The preparation method of the core glass is exactly the same as that of the cladding glass;

[0033] 4. Cut, grind and polish the selected fiber core glass into a circular fiber core prefabricated rod of the required size, referred to as the core rod, and the surface finish of the core rod is grade 2; the selected inner cladding glass After cutting, grinding and polishing int...

Embodiment 2

[0040] The composition of tellurate glass, the glass preparation process is the same as that in Example 1. Aluminophosphate glass is selected as the outer cladding glass sleeve, and a tellurate glass thin rod is drawn at 600°C, and the obtained thin rod is inserted into the aluminophosphate glass. A composite glass optical fiber preform is formed in the casing, and a tellurite glass composite optical fiber with a core of 80 μm and an outer diameter of the optical fiber of 2000 μm is made by drawing at 600° C.

[0041] The test shows that the transmission loss of the optical fiber at 1310nm is 0.1dB / m.

Embodiment 3

[0043] The composition of tellurate glass, the glass preparation process is the same as in Example 1, select lead silicate glass as the outer cladding glass sleeve, pull down a tellurate glass thin rod at 520°C, insert the obtained thin rod into lead silicate glass In the casing, a composite glass optical fiber preform is formed, and a tellurite glass composite optical fiber with a core of 5 μm and an outer diameter of the optical fiber of 125 μm is produced by drawing at 520° C. The optical fiber preparation process is the same as that of Example 1;

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Abstract

The invention provides a preparation method for tellurate glass compound optical fibers. According to the preparation method, an outer coating layer is made of phosphoaluminate glass or lead silicate glass; core fiber glass and inner coating layer glass are made of tellurate glass; the core fiber glass is drawn into a thin rod and is inserted into a glass sleeve prepared from the inner coating layer glass; a core rod with the coating layer glass is drawn on a wire drawing machine; the prepared core rod is inserted into an outer coating layer glass sleeve prepared from the phosphoaluminate glass or the lead silicate glass to be drawn into the multi-coating-layer tellurate glass compound optical fibers. The preparation method has the advantages that the tellurate glass compound optical fibers with high mechanical strength can be prepared and the disadvantages of traditional tellurate glass optical fibers that the fragility is great, and the traditional tellurate glass optical fibers are easy to crack and are not easy to operate are overcome; meanwhile, the good middle infrared transmission capability of the tellurate glass is remained.

Description

technical field [0001] The invention relates to an optical fiber, in particular to a preparation method of a tellurite glass composite optical fiber. Background technique [0002] 2-5μm mid-infrared laser fiber and transmission fiber have important application prospects in biomedicine, spectroscopy, remote sensing measurement, lidar, next-generation optical communication and other fields. Due to the molecular vibration absorption loss of traditional silica optical fiber, the infrared cut-off edge is only ~2.4 μm, so the mid-infrared glass optical fiber that can transmit in the 2-5 μm band has attracted great attention. Among many glass materials, tellurite glass fiber has low phonon energy (~800cm -1 ), wide infrared transmission range (0.4-5.5μm), good chemical stability and high nonlinear coefficient, it can be used as mid-infrared laser fiber and transmission fiber, or as a nonlinear fiber for generating supercontinuum, which has great application value . [0003] The ...

Claims

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Application Information

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IPC IPC(8): C03C13/04C03B37/012C03B37/025
CPCC03C3/122C03C3/253C03C13/048
Inventor 李科峰胡丽丽张磊范小康李文涛
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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