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Quantum dot optical fiber core material with PMMA as substrate and preparation and application thereof

An optical fiber core and quantum dot technology, applied in the field of optical fiber core materials, can solve problems such as no one reported, and achieve the effects of preventing agglomeration, high mechanical strength, and high optical gain

Inactive Publication Date: 2010-08-04
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 with PMMA as substrate and preparation and application thereof
  • Quantum dot optical fiber core material with PMMA as substrate and preparation and application thereof
  • Quantum dot optical fiber core material with PMMA as substrate and preparation and application thereof

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 quantum dot optical fiber core material with PMMA as a substrate and the preparation and application thereof. The optical fiber core material adopts PMMA as the substrate, adopts PbS or PbSe quantum dots as dophant, the doping method of the PbS or PbSe quantum dots is spatial uniform doping, the size of the PbS or PbSe quantum dots is 4nm to 20nm, and the number density of the PbS or PbSe quantum dots in the optical fiber core material is 1*1016-1*1019cm-3. The optical fiber core material is heated to 150 to 185DEG C, and becomes gelatinous; the gelatinous optical fiber core material is poured into a capillary through a pressure drop method, and quantum dot optical fibers with the number density of the quantum dots of 1*1016-1*1019cm-3 are prepared. When the quantum dot optical fibers are applied to an optical fiber amplifier, high optical gain, wide modulation bandwidth and low noise can be realized in a 1.2 to 1.6 micron communication waveband.

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 Applications(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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