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Method for preparing polymer optical waveguide amplifier gain medium by copolymerization of rare earth nanoparticles and monomers

An optical waveguide amplifier and nanoparticle technology, applied in the directions of optical waveguides, light guides, instruments, etc., can solve the problems of non-repeatable measurement and use, poor optical properties of optical waveguide devices, and low doping concentration.

Active Publication Date: 2018-07-24
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is difficult to achieve uniform and stable doping of rare earth nanoparticles in polymers only by physical means. Nanoparticle aggregation and precipitation often occur, and the doping concentration is low. The optical properties of the prepared optical waveguide device Poor, long-term stability is difficult to meet practical requirements, and cannot be repeatedly measured and used

Method used

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  • Method for preparing polymer optical waveguide amplifier gain medium by copolymerization of rare earth nanoparticles and monomers
  • Method for preparing polymer optical waveguide amplifier gain medium by copolymerization of rare earth nanoparticles and monomers
  • Method for preparing polymer optical waveguide amplifier gain medium by copolymerization of rare earth nanoparticles and monomers

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Embodiment 1

[0059] (1) Preparation of NaYF with surface-modified unsaturated double bonds by high-temperature pyrolysis 4 : Yb, Er nanoparticles: the matrix of rare earth nanoparticles is fluoride NaYF 4 , the sensitizer ion is Yb 3+ , the luminescence center ion is Er 3+ ; The oleic acid groups with polymerization active unsaturated double bonds are modified on the surface of nanoparticles. The specific synthesis steps are as follows: 1mmol rare earth chloride salt RECl 3 ·6H 2 O (rare earth chloride salt is a mixture of three chloride salts, wherein the molar percentage is 81% YCl 3 , 18% YbCl 3 , 1% ErCl 3 ), 15mL of octadecene, and 6mL of oleic acid were placed in a 100mL three-necked flask, and under the protection of argon, the temperature of the system was raised to 160°C, reacted for 30min, and then naturally cooled to room temperature. Then, 10 mL of anhydrous methanol mixed solution dissolved with 4 mmol of ammonium fluoride and 2.5 mmol of sodium hydroxide was slowly dro...

Embodiment 2

[0063](1) Preparation of surface-modified unsaturated double bond core-shell NaYF by solvothermal method 4 / NaYbF 4 : Er nanoparticles. Through heterogeneous core induction, a core-shell NaYF with surface-modified unsaturated double bonds was synthesized 4 / NaYbF 4 : Er nanoparticles; wherein the sensitizer ion Yb in the shell 3+ The doping amount is equivalent to 100%, and the luminescent center ion is Er 3+ , the doping concentration is 2%. In the environment of oleic acid, nanoparticles with surface-modified unsaturated double bonds were synthesized by a solvothermal method. Measure 20mL oleic acid, 10mL ethanol and 2mL deionized water and stir to mix. Weigh 0.6g of NaOH solid into the mixed solution, stir until fully dissolved, and obtain a clear solution A. Weigh 0.5mmol of YCl 3 ·6H 2 O solid, dissolved in 4 mL deionized water. This solution was added dropwise into mixed solution A, and stirred vigorously for half an hour to obtain solution B. Weigh 2mmolKF·2H...

Embodiment 3

[0067] (1) Utilize the precipitation method to prepare Y without polymerization active groups on the surface 2 o 3 : Er nanoparticles, the matrix of rare earth nanoparticles is oxide Y 2 o 3 , the sensitizer ion is not doped, that is, the doping amount of the sensitizer ion is 0%, and the luminescence center ion is Er 3+ , the concentration is 1%. The specific synthesis steps are as follows: 1mmol rare earth chloride salt RECl 3 ·6H 2 O (rare earth chloride salt is a mixture of two chloride salts, of which 99% YCl 3 , 1% ErCl 3 ) was dissolved in 20 mL of deionized water to form a transparent and clear solution, and under stirring conditions, 5 mL of NaOH solution with a mass fraction of 10% was slowly added dropwise to form a flocculent precipitate. Transfer the solution and precipitate to a 30mL polyethylene-lined reaction kettle, and after hydrothermal annealing at 200°C for 12 hours, cool to room temperature and centrifuge to obtain Y 2 o 3 : Er nanoparticles. F...

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Abstract

The invention discloses a method for preparing a gain medium of a polymer optical waveguide amplifier by copolymerizing rare-earth nanoparticles and monomers, and belongs to the technical field of preparation of polymer optical waveguide devices. The method specifically comprises the following steps: preparing the rare-earth nanoparticles doped with sensitizer ions and luminous central ions, wherein the luminous central ions can emit light with the wavelength of signal light, so that the gain of the signal light is realized; modifying the surfaces of the rare-earth nanoparticles with polymeric active groups with a chemical method, and obtaining nanoparticles capable of being copolymerized with the polymer monomers; copolymerizing the rare-earth nanoparticles with the polymeric active groups and the polymer monomers, chaining the nanoparticles to a polymer molecular chain through covalent bonds, and preparing composite polymer; taking the composite polymer as the gain medium for preparing the optical waveguide amplifier, and the like. The composite polymer, namely the gain medium, prepared with the method is utilized for preparing the optical waveguide amplifier, so that the stability and optical property of the optical waveguide amplifier are greatly improved; preparation of a high-stability polymer optical waveguide amplifier can be realized.

Description

technical field [0001] The invention belongs to the technical field of preparation of polymer optical waveguide devices, and specifically relates to the stable and high-concentration doping technology of rare earth nanoparticles in polymers, and the stable film-forming technology of rare earth nanoparticles and monomer copolymers. The technology can improve the dispersibility of luminescent center ions in the polymer matrix in the gain medium of the polymer optical waveguide amplifier, and improve the optical amplification properties of the optical waveguide amplifier. The invention can realize the preparation of highly stable polymer optical waveguide amplifier. Background technique [0002] Optical amplifier is an indispensable key device in the new generation of optical fiber communication system. The optical amplifier solves the limitation of the optical signal attenuation on the transmission rate and distance of the optical network, and greatly promotes the development...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B6/134G02B6/138G02B6/13
CPCG02B6/13G02B6/134G02B6/138
Inventor 赵丹秦伟平王菲秦冠仕
Owner JILIN UNIV
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