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Rare earth doped bismuth germanate single crystal optical fiber and cladding method

A technology of rare earth doping and bismuth germanate, which is applied in the direction of cladding optical fiber, single crystal growth, single crystal growth, etc., can solve the problems such as the inapplicability of quartz, and achieve the effect of high power

Active Publication Date: 2021-04-30
NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, quartz is not suitable for the cladding of crystals with lower melting points. BGO has been widely used in scintillation research, but its excellent physical properties, stable chemical properties and thermal properties make it an excellent rare earth ion doping to achieve Potential host materials for laser output

Method used

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  • Rare earth doped bismuth germanate single crystal optical fiber and cladding method
  • Rare earth doped bismuth germanate single crystal optical fiber and cladding method
  • Rare earth doped bismuth germanate single crystal optical fiber and cladding method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] A preparation of rare earth ion doped silicate optical fiber and its cladding method, the rare earth ion is selected as Yb 3+ , specifically prepared by the following method:

[0037] (1) Ingredients: Yb 2 o 3 、 Bi 2 o 3 、GeO 2 Be raw material, introduce raw material by 0.5:2:3 mole composition ratio, and put into agate mortar and grind 50min, thereby raw material is mixed;

[0038] (2) Pressing material: Press the prepared raw materials into rods under the water pressure of 60MPa;

[0039] (3) Burning material: put the material rod into the muffle furnace, the heating rate is 80°C / h, the constant temperature is 700°C, the constant temperature time is 20h, the cooling rate is 60-120°C / h, and it is lowered to room temperature.

[0040] (4) Growing fiber core: a silicate optical fiber doped with rare earth ions with a diameter of 1 mm is prepared by the micro-draw method or the laser heating susceptor method. Among them, the pulling speed of the micro pull-down met...

Embodiment 2

[0046] A preparation of rare earth ion doped silicate optical fiber and its cladding method, the rare earth ion is selected as Yb 3+ , specifically prepared by the following method:

[0047] (1) Ingredients: Yb 2 o 3 、 Bi 2 o 3 、GeO 2 Be raw material, introduce raw material by 0.65:2:3 mole composition ratio, and put into agate mortar and grind 60min, thereby raw material is mixed;

[0048] (2) Pressing material: Press the prepared raw materials into rods under the water pressure of 75MPa;

[0049] (3) Burning material: put the material rod into the muffle furnace, the heating rate is 120°C / h, the constant temperature is 800°C, the constant temperature time is 25h, the cooling rate is 60-120°C / h, and it is lowered to room temperature.

[0050] (4) Growing fiber core: a silicate optical fiber doped with rare earth ions with a diameter of 2 mm was prepared by the micro-draw method or the laser heating susceptor method. Among them, the pulling speed of the micro pull-down ...

Embodiment 3

[0056] A kind of preparation and cladding method of rare earth ion doped silicate optical fiber, select rare earth ion as Tm 3+ , specifically prepared by the following method:

[0057] (1) Ingredients: Tm 2 o 3 、 Bi 2 o 3 、GeO 2 Be raw material as raw material, introduce raw material by 0.003:2:3 mole composition ratio, and put into agate mortar and grind 40min, thereby raw material is mixed;

[0058] (2) Pressing material: Press the prepared raw materials into rods under the water pressure of 48MPa;

[0059] (3) Burning material: Put the material rod into the muffle furnace. The heating rate is 150°C / h, the constant temperature is 650°C (constant temperature time 30h), the cooling rate is 60-120°C / h, down to room temperature.

[0060] (4) Growing fiber core: prepare a rare earth ion-doped silicate optical fiber with a diameter of 1.5 mm by micro-draw method or laser heating susceptor method. Among them, the pulling speed of the micro pull-down method is: 0.3-0.5mm / mi...

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Abstract

The invention provides a rare earth doped bismuth germanate single crystal optical fiber, which comprises an outer cladding and an inner fiber core, the fiber core is of a Bi4Ge3O12 single crystal structure doped with rare earth ions with a certain concentration, the cladding is of a Bi4Ge3O12 structure, raw materials adopted for preparing the fiber core are rare earth ion oxide, Bi2O3 and GeO2, and the molar ratio of Bi2O3 to GeO2 is (1-2): (3-4). According to the invention, a two-layer structure is arranged and comprises an external cladding and an internal fiber core, the external cladding is a glass structure prepared from Bi4Ge3O12, the internal fiber core is a Bi4Ge3O12 single crystal structure doped with rare earth ions, and meanwhile, the invention also provides a preparation method of the optical fiber, and compared with the prior art, the laser output by the prepared optical fiber is more efficient and higher in power.

Description

technical field [0001] The invention belongs to the field of optical fiber materials, in particular to a cladding method for a rare earth-doped bismuth germanate single crystal optical fiber. Background technique [0002] At present, the widely used material for crystal cladding is quartz (SiO 2 ). The basic function of the silica fiber is to confine and propagate the light beam, that is, to confine the light energy of a certain wavelength within a radial range of a few to tens of microns and propagate along the length of the silica fiber with low loss. Due to the wide range of transmission wavelengths of silica fibers (from near ultraviolet to near infrared, wavelengths from 0.38-2.1um), silica fibers are suitable for transmission of signals and energy at various wavelengths from ultraviolet to infrared. Due to the advantages of high mechanical strength, good bending performance and easy coupling with light sources, it is widely used in sensing, spectral analysis, process...

Claims

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Application Information

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IPC IPC(8): C03C13/04C03B37/012C03B37/025C30B29/32C30B15/08C30B15/14G02B6/02G02B1/02
CPCC03C13/048C03B37/01211C03B37/025C30B29/32C30B15/08C30B15/14G02B6/02G02B1/02
Inventor 李纳徐军徐晓东王东海王庆国唐慧丽吴锋
Owner NANJING TONGLI CRYSTAL MATERIALS RES INST CO LTD
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