Cladding glass for flexible optical fiber image bundles with high resolution ratio, and preparation method thereof

An optical fiber image transmission beam and cladding glass technology, applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of difficult glass matching, difficult preparation of acid-soluble cladding glass, poor acid-dissolving effect, etc., and achieve good matching ability. , good chemical stability, good anti-devitrification effect

Inactive Publication Date: 2014-02-05
NANJING UNIV OF POSTS & TELECOMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: The purpose of this invention is to propose a cladding glass for high-resolution flexible optical fiber image transmission bundle and its preparation method, which solves the difficulties in the preparation of acid-soluble cladding glass, and the choice between the choice...

Method used

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  • Cladding glass for flexible optical fiber image bundles with high resolution ratio, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Commercially available analytically pure chemical reagents are used to form the ingredients according to the formula in Table 1:

[0026] Table 1

[0027] composition

[0028] Accurately calculate and weigh 800g of raw materials, stir evenly and make batches for later use. Add the batch materials in several times, and fully melt when the electric furnace is heated to 1350 °C. After completion, the electric furnace is heated to 1400°C, stirred until the viscosity is moderate, and after clarification for about 1 hour, the temperature is slowly lowered to 1200°C, and the discharged material is poured into a mold for molding and then annealed. The glass refractive index n d (λ=587.6nm)=1.534, the acid dissolution rate in 0.5N nitric acid and hydrochloric acid mixture is 25.25mg.cm -2 .h -1 , has a very good acid dissolution rate, and has a good wire drawing effect with the mandrel and the middle cladding sleeve, and can smoothly draw the monofilament of the re...

Embodiment 2

[0030] Adopt commercially available analytical pure chemical reagent, according to the prescription composition in Table 2 batching:

[0031] Table 2

[0032] composition

[0033] Accurately calculate and weigh 800g of raw materials, stir evenly and make batches for later use. Add the batch materials in several times, and fully melt when the electric furnace is heated to 1350 °C. After completion, the electric furnace is heated to 1400°C, stirred until the viscosity is moderate, and after clarification for about 1 hour, the temperature is slowly lowered to 1200°C, and the discharged material is poured into a mold for molding and then annealed. The glass refractive index n d (λ=587.6nm)=1.535, the acid dissolution rate of the glass block in the mixed solution of 0.5N nitric acid and hydrochloric acid is 17.25mg.cm -2 .h -1 , has a very good acid dissolution rate, and has a good wire drawing effect with the mandrel and the middle cladding sleeve, and can smoothly d...

Embodiment 3

[0035] Adopt commercially available analytical pure chemical reagent, according to the prescription composition in Table 3 batching:

[0036] table 3

[0037] composition

[0038] Accurately calculate and weigh 800g of raw materials, stir evenly and make batches for later use. Add the batch materials in several times, and fully melt when the electric furnace is heated to 1350 °C. After completion, the electric furnace is heated to 1400°C, stirred until the viscosity is moderate, and after clarification for about 1 hour, the temperature is slowly lowered to 1200°C, and the discharged material is poured into a mold for molding and then annealed. The glass refractive index n d (λ=587.6nm)=1.559, the acid dissolution rate of the glass block in the mixed solution of 0.5N nitric acid and hydrochloric acid is 20.51mg.cm -2 .h -1 , has a very good acid dissolution rate, and has a good wire drawing effect with the mandrel and the middle cladding sleeve, and can smoothly d...

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Abstract

The invention proposes cladding glass for flexible optical fiber image bundles with high resolution ratio, and a preparation method thereof. The method comprises the following steps: calculating and weighing raw materials according to the constituents of the glass and the mole percent; evenly stirring and mixing after fully grinding, and sealing a mixture by using a plastic sealed bag for use; adding the mixture to a crucible for a plurality of times; putting the crucible into a silicon carbide rod furnace at 1000-1400 DEG C; stirring once at an interval of 15 minutes after raw materials are completely melted until the raw materials are completely melted and settled; taking out vitreous humour, pouring the vitreous humour into a pre-heating die, cooling and molding; putting the poured cooled glass into a muffle furnace with a set temperature program and annealing; taking out the sample, namely the cladding glass for the flexible optical fiber image bundles with high resolution ratio after annealing is finished. The cladding glass has a good acid dissolving effect in an acid liquor; the prepared acid soluble glass has good chemical stability and good devitrification resistance, and is not easily corroded in air.

Description

technical field [0001] The invention relates to a cladding glass for preparing flexible optical fiber image transmission bundles by an acid-dissolving method and a preparation method thereof, belonging to the technical field of optical materials and their processing and manufacturing. Background technique [0002] The high-resolution flexible optical fiber image transmission bundle prepared by the acid solution method has been widely used as a relay image transmission component in medical treatment, military affairs and people's daily life. The acid-dissolving process is a relatively advanced process method used in the world to manufacture image beams. This method uses three layers of coaxial monofilaments, arranged in bundles, hot melt drawn into multifilaments, and finally the hard image beams Both ends of the bundle are wrapped and fixed with acid-resistant materials, and the middle is immersed in acid solution to remove the acid-dissolved glass to form a flexible optical...

Claims

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Application Information

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IPC IPC(8): C03C3/064C03B37/012
Inventor 韦玮戴微微郑锐林王东东卢星
Owner NANJING UNIV OF POSTS & TELECOMM
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