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Quantum dot optical fiber core material based on pmma and its preparation and application

An optical fiber core and quantum dot technology, applied in the field of optical fiber core materials, can solve the problem of no one reporting, and achieve the effects of preventing agglomeration, high mechanical strength, and low noise

Inactive Publication Date: 2012-02-22
ZHEJIANG UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, none of the above-mentioned experimental schemes involves the preparation of PMMA-based quantum dot optical fiber materials, and no one has reported how to prepare plastic optical fibers with PMMA as a substrate and quantum dots as dopants in the process.

Method used

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  • Quantum dot optical fiber core material based on pmma and its preparation and application
  • Quantum dot optical fiber core material based on pmma and its preparation and application
  • Quantum dot optical fiber core material based on pmma and its preparation and application

Examples

Experimental program
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Effect test

Embodiment 1

[0028]A mixture of 25ml of methyl methacrylate (MMA) and 0.25g of azobisisobutyronitrile (AIBN) was pre-polymerized at 75°C for 15 minutes, and quenched in water. Then put it into a constant temperature drying oven to polymerize for 16 hours at a temperature of 50° C. to obtain a PMMA colloid.

[0029] Add 3ml, 0.02mol / L sodium sulfide and lead nitrate solution into 50ml, 0.2mol / L aerosol n-heptane solution, stir well to form sodium sulfide reverse gel solution and lead nitrate reverse gel solution respectively ; In the case of strong stirring, slowly add the sodium sulfide reverse gel solution to the lead nitrate reverse gel solution, the solution will change from a transparent liquid to a reddish-brown liquid. Centrifuge the obtained reddish-brown liquid in a centrifuge for 5-15 minutes. At this time, the solution will appear precipitated and layered. The precipitate is PbS quantum dots, and the obtained precipitate is centrifugally washed with distilled water for 3 times, a...

Embodiment 2

[0033] A mixture of 25ml of methyl methacrylate (MMA) and 0.25g of azobisisobutyronitrile (AIBN) was pre-polymerized at 90°C for 7 minutes, and quenched in water. Then put it into a constant temperature drying oven to polymerize for 4 hours at a temperature of 50° C. to obtain a PMMA colloid.

[0034] Add 1ml, 0.02mol / L sodium sulfide and lead nitrate solution to 50ml, 0.2mol / L aerosol n-heptane solution respectively, stir well to form sodium sulfide reverse gel solution and lead nitrate reverse gel solution; In the case of strong stirring, slowly add the sodium sulfide reverse gel solution into the lead nitrate reverse gel solution, and the solution will change from a transparent liquid to a reddish-brown liquid. Centrifuge the obtained reddish-brown liquid in a centrifuge for 5-15 minutes. At this time, the solution will appear precipitated and layered. The precipitate is PbS quantum dots, and the obtained precipitate is centrifugally washed with distilled water for 3 times,...

Embodiment 3

[0038] A mixture of 25ml of methyl methacrylate (MMA) and 0.25g of azobisisobutyronitrile (AIBN) was pre-polymerized at 75°C for 10 minutes and cooled at room temperature. Then put it into a constant temperature drying oven to polymerize for 24 hours at a temperature of 50°C to obtain a PMMA colloid.

[0039] Add 1.5ml, 0.01mol / L sodium sulfide and lead nitrate solution to 50ml, 0.1mol / L aerosol n-heptane solution, stir well to form sodium sulfide reverse gel solution and lead nitrate reverse gel solution ; In the case of strong stirring, slowly add the sodium sulfide reverse gel solution to the lead nitrate reverse gel solution, the solution will change from a transparent liquid to a reddish-brown liquid. Centrifuge the obtained reddish-brown liquid in a centrifuge for 5-15 minutes. At this time, the solution will appear precipitated and layered. The precipitate is PbS quantum dots, and the obtained precipitate is centrifugally washed with distilled water for 3 times, and fin...

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Abstract

The invention discloses a PMMA-based quantum dot optical fiber core material and its preparation and application. The fiber core material is based on PMMA, and PbS or PbSe quantum dots are used as dopants. The doping method of the PbS or PbSe quantum dots is spatially uniform doping, and the size of the PbS or PbSe quantum dots is 4nm -20nm, the number density of PbS or PbSe quantum dots in the fiber core material is 1×1016-1×1019cm-3. Heat the optical fiber core material to 150-185°C to make it into a gel; pour the gel-like optical fiber core material into a quartz capillary by the differential pressure method to obtain the number density of quantum dots Quantum dot fiber between 1×1016-1×1019cm-3. When the quantum dot optical fiber of the present invention is applied to the optical fiber amplifier, high optical gain, wide modulation bandwidth and low noise can be obtained in the 1.2-1.6 micron communication band.

Description

(1) Technical field [0001] The invention relates to the technical field of preparation of optical communication materials and nanometer materials, in particular to an optical fiber core material uniformly doped with PbS and PbSe quantum dots based on PMMA and its preparation and application. (2) Background technology [0002] PMMA (polymethyl methacrylate) is a highly transparent amorphous thermoplastic polymer with a relative density of 1.188-1.22 (30°C / 4°C), a refractive index of 1.49, a glass transition temperature of 80-100°C, and a decomposition temperature of >200 ℃. Use temperature -40~80℃. As a traditional organic material, due to its good permeability (transmittance of 90%-92% in the visible light band, and 85%-90% transmittance in the infrared band), high mechanical strength and toughness, It can be widely used in optical fields such as: mobile phone protective screen materials, PC lens materials, liquid crystal display (LCD) materials and optical fiber materi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L33/12C08K3/30C01B19/04G02B6/02
Inventor 程成王若栋严金华
Owner ZHEJIANG UNIV OF TECH
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