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Tellurate glass and method for producing the same

A tellurite glass and glass technology, applied in glass manufacturing equipment, glass furnace equipment, manufacturing tools, etc., can solve the problems of poor supercontinuum output quality, high nonlinear coefficient, high welding loss, etc., and achieve excellent physical and chemical properties , Good physical and chemical stability and low cost

Inactive Publication Date: 2008-07-16
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

Although the manufacturing method of photonic crystal fiber is not used, bismuthate glass fiber can also obtain such a high nonlinear coefficient, but due to the loss of bismuthate glass fiber itself and the fusion loss with quartz is too high (in the 1.55μm band respectively is 1.8dB / m and 3~8dB / m), at the same time, the bismuthate glass fiber itself has a large group velocity dispersion effect (GVD), which makes it have a large dispersion in the 1.55μm communication band, causing pulse broadening, degrades supercontinuum output quality
At the OFC meeting in 2005, J.Y.Y.Leong et al. (J.Y.Y.Leong, P.Petropoulos, S.Asimakis, et.al.Proceedings of OFC2005, Anaheim, 2005) from the Optoelectronics R&D Center of Southampton University reported a method for producing SC Spectrum lead silicate glass photonic crystal fiber with nonlinear coefficient up to 1820W -1 Km -1 , this kind of optical fiber has also been redesigned on the end face structure, so it is more difficult to manufacture

Method used

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  • Tellurate glass and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] (1) Select the glass formula according to the first group of components in Table 1, weigh each raw material, and the purity of the raw material is more than 99.9%, and mix and stir the prepared powdery raw materials evenly to form a mixture;

[0044] (2) Put the mixture into a platinum crucible, place it in a silicon carbide rod electric furnace, and melt it at a melting temperature of 900 to 1000°C. During the melting process, dry nitrogen gas is introduced to protect the atmosphere. A platinum cover with stirring blades is added to prevent the entry of water molecules in the external air;

[0045] (3) After the raw materials are completely melted, continue to raise the temperature to 1100-1200°C, and stir with a platinum propeller at 60 rpm for 60 minutes to make F - The ions are completely volatilized as far as possible, and the [OH in the glass liquid is taken away - ]; then lower the temperature at 150°C / hour, and at the same time adjust the stirring speed to 30 r...

Embodiment 3

[0049] (1) Select the glass formula according to the third group of components in Table 1, weigh each raw material, the purity of the raw material is more than 99.9%, and mix and stir the prepared powdery raw material evenly;

[0050] (2) Put the mixture into a platinum crucible, place it in a silicon carbide rod electric furnace, and melt it at a melting temperature of 850-950°C. During the melting process, dry nitrogen gas is introduced to protect the atmosphere. At the same time, add Platinum lid with stirring blades to prevent the entry of water molecules from the outside air;

[0051] (3) After the raw materials are completely melted, continue to increase the temperature to 1100-1150°C, and stir with a platinum propeller at 80 rpm for 40 minutes to make the F evaporate as completely as possible and take away the [OH in the glass liquid - ]; then lower the temperature at 100°C / hour, and at the same time adjust the stirring speed to 20 rpm and continue to stir for 45 minute...

Embodiment 5

[0055] (1) Select the glass formula according to the fifth group of components in Table 1, weigh each raw material, the purity of the raw material is more than 99.9%, and mix and stir the prepared powdery raw material evenly;

[0056] (2) Put the mixture into a platinum crucible, place it in a silicon carbide rod electric furnace, and melt it at a melting temperature of 800-850°C. During the melting process, dry nitrogen gas is introduced for atmosphere protection, and at the same time, add Platinum lid with stirring blades to prevent the entry of water molecules from the outside air;

[0057] (3) After the raw materials are completely melted, continue to raise the temperature to 950-1000°C, and stir with a platinum propeller at 60 rpm for 90 minutes to make the F evaporate as completely as possible and take away the [OH in the molten glass. - ]; then lower the temperature at 100°C / hour, and at the same time adjust the stirring speed to 30 rpm and continue to stir for 30 minut...

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Abstract

The invention tellurate glass and a preparation method is disclosed, among which the basic compositions of the glass are 65-85 mol percent of TeO2, 0-20 mol percent PbO, 2-8 mol percent of PbF2, 0-10 mol percent of Bi2O3, 0-15 mol percent Nb2O5. , Being prepared through a common melting method. In the melting process, preparation technologies like stirring, putting into dry nitrogen and clarification are adopted to ensure that [OH-] mass in the glass compositions can be effectively removed. The glass material is characterized by good materialization stability, favorable fiber-forming, high third-order nonlinear susceptibility, small dispersion slope and so on; the preparation process has simple and easy operation and low cost. The invention is applicable to use optical fiber matrix material in super short pulser source of optical communication.

Description

technical field [0001] The invention relates to a communication optical fiber, in particular to an optical fiber matrix material for a communication light source that can realize supercontinuum output for an ultra-high-speed and large-capacity optical fiber communication system—tellurite glass and a preparation method thereof. The glass matrix has the characteristics of good physical and chemical stability, good fiber-forming performance, high third-order nonlinear coefficient, and small dispersion slope, and is suitable for optical fiber matrix materials for ultrashort pulse sources in optical communications. Background technique [0002] In recent years, with the rapid growth of Internet business, ultra-high-speed and large-capacity optical fiber communication system is an urgent requirement in the field of optical communication. The combination of optical wavelength division multiplexing technology and optical time division multiplexing technology is the best way to estab...

Claims

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Application Information

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IPC IPC(8): C03C3/23C03B5/235C03B25/00
CPCC03B5/23C03B37/01268C03B5/187C03B2201/60C03B5/1675C03B5/08C03B2201/86
Inventor 汪国年范慧艳高国军胡丽丽
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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