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Method for raising near infrared light emitting thermal stability of Bi-doped glass

A technology of doping glass and thermal stability, which is applied in the field of improving the thermal stability of Bi-doped glass near-infrared luminescence, which can solve the problems of fluorescence quenching and luminescence quenching, and achieve the effect of simple operation

Inactive Publication Date: 2014-04-09
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the excellent near-infrared luminescence performance is obtained in the bulk glass material, the phenomenon of luminescence quenching often occurs after the Bi-doped bulk glass material is drawn into an optical fiber, because the bulk glass material is drawn into an optical fiber During the process, Bi ions will aggregate to form non-luminescent clusters or nanoparticles, thereby quenching the fluorescence

Method used

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  • Method for raising near infrared light emitting thermal stability of Bi-doped glass

Examples

Experimental program
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Effect test

Embodiment 1

[0031] Two glass components: a) 75B 2 o 3 -20BaO-5Al 2 o 3 -1Bi 2 o 3 ;

[0032] b) 75B 2 o 3 -15BaO-5La 2 o 3 -5Al 2 o 3 -1Bi 2 o 3。

[0033] 1) Prepare the above two glasses a and b by melting method. Accurately weigh each component in the glass component, mix and grind them evenly in a mortar (the rare earth ion compound is added together with other glass components), then pour it into a crucible and melt it at 1550 °C for 20 minutes, and finally pour it on the copper Quenching in the mold to form glass;

[0034] 2) Treat a at a series of temperature points at intervals of 30°C in the temperature range of 500-700°C for two hours, and study the change of luminous intensity with the heat treatment temperature; b is treated the same as a under the same conditions, and the same To study the variation law of luminous intensity with heat treatment temperature.

[0035] Comparing the variation of the luminous intensity of the two ...

Embodiment 2

[0037] The glass composition is the same as in Example 1, except that the glass b in Example 1 is changed to add 10 mol% La 2 o 3 , and under the same conditions as in Example 1, the variation law of the luminous intensity with the heat treatment temperature was studied. It was found that adding 10mol% La 2 o 3 The thermal stability of the rear glass is improved by about 8 times.

Embodiment 3

[0039] The glass composition is the same as in Example 1, except that the glass b in Example 1 is changed to add 20 mol% La 2 o 3 , and under the same conditions as in Example 1, the variation law of the luminous intensity with the heat treatment temperature was studied. It was found that adding 20mol% La 2 o 3 The thermal stability of the back glass is improved by about 7.2 times.

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Abstract

The invention discloses a method for raising near infrared light emitting thermal stability of Bi-doped glass. A melting method is employed, and 1-20mol% of rare earth ionic compounds are added in Bi-doped glass ingredients. The rare earth ions in the rare earth ionic compounds are La<3+>, Pr<3+>, Sm<3+>, Gd<3+>, Yb<3+>, Ce<3+>, Eu<3+>, Tb<3+>, Ho<3+>, Er<3+>, Dy<3+>, Lu<3+>, Nd<3+> or Tm<3+>. Bi-doped glass is oxide glass, chalcogenide glass or halide glass. The oxide glass is borates, silicates, germanates or phosphates and the like. The chalcogenide glass is sulfides or oxysulfides. The halide glass is fluorides, oxyfluorides and the like. Rare earth ions are added in Bi-doped glass ingredients as "stabilizing agents" of glass strucutures directly, and the near infrared light emitting thermal stability is raised greatly. The operation is simple, change of preparation conditions is not needed, and the method can be achieved under existing technology conditions. The method also can be used for solving the problem of light-emitting quenching during Bi-doped glass fibre drawing process.

Description

technical field [0001] The invention relates to a method for improving the performance of ion-doped glass, in particular to a method for improving the near-infrared luminous thermal stability of Bi-doped glass. Background technique [0002] With the increasingly urgent demand for information dissemination, the proportion of optical fiber communication in human social communication is increasing. The optical fiber laid by humans has reached one billion kilometers, enough to circle the earth 25,000 times, and it is still growing at a rate of thousands of kilometers per hour. Optical fiber amplifiers are essential components in optical fiber communication systems. Rare-earth ion-doped optical fiber amplifiers, such as EDFA, are widely used at present. Due to their narrow gain bandwidth, it has gradually become difficult to meet the increasingly large demand for information transmission. The development of new broadband Optical fiber amplifier has become an inevitable trend. ...

Claims

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Application Information

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IPC IPC(8): C03C13/04C03C4/12
CPCC03C3/112C03C4/12C03C13/046
Inventor 周时凤郭强兵许贝贝邱建荣
Owner ZHEJIANG UNIV
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