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Fluorine-contained polyimide optical waveguide material and method for producing the same

A polyimide optical and waveguide technology, applied in the direction of optical waveguide light guide, light guide, optics, etc., can solve the problems of not using optical waveguide materials, not involving optical loss, refractive index, film-forming properties and mechanical properties, etc., to achieve Good solubility, good mechanical properties, good solubility effect

Inactive Publication Date: 2009-11-18
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The preparation of fluorine-containing polyimide materials involved in these patents is mainly based on two-monomer polymers, and rarely involves the preparation of three-monomer fluorine-containing polyimides, let alone for the preparation of low-loss optical waveguide materials, and Little to no research on optical loss, refractive index, film formation, and mechanical properties

Method used

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  • Fluorine-contained polyimide optical waveguide material and method for producing the same
  • Fluorine-contained polyimide optical waveguide material and method for producing the same
  • Fluorine-contained polyimide optical waveguide material and method for producing the same

Examples

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Embodiment 1

[0029] 5,5'-(hexafluoroisopropylidene)-bis-(2-aminophenol) (6FHP) (3mmol), 4,4'-hexafluoroisopropylidene-phthalic anhydride (6FDA) (1.5mmol) and bisphenol A dianhydride (1.5mmol) were dissolved in 5mL DMF, and then under a nitrogen atmosphere, the 6FHP solution was mixed with the solution of 6FDA and bisphenol A dianhydride, reacted at room temperature for 24h, added 8mL magnesium sulfate and dried xylene, heated up to 160°C, and continued to react for 3-10 hours, and the reaction water and xylene were distilled out azeotropically. After cooling to room temperature, the reacted solution was added dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate a precipitate and filter to obtain a crude fluorine-containing polyimide. Dissolve the crude product of fluorine-containing polyimide in 10 mL of tetrahydrofuran, and then add this tetrahydrofuran solution dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to p...

Embodiment 2

[0032] Dissolve 6FDA (3mmol), 6FHP (1.5mmol) and bisphenol A diamine (1.5mmol) in 5mL DMF respectively, then mix 6FDA solution with 6FHP and bisphenol A diamine solution under nitrogen atmosphere, and react at room temperature for 24h , add 8 mL of magnesium sulfate dried xylene, raise the temperature to 160°C, continue the reaction for 3-10 hours, and distill off the reaction water and xylene azeotropically. After cooling to room temperature, the reacted solution was added dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate a precipitate and filter to obtain a crude fluorine-containing polyimide. Dissolve the crude product of fluorine-containing polyimide in 10 mL of tetrahydrofuran, and then add this tetrahydrofuran solution dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate precipitates. Reflux the precipitate with methanol in the extractor to purify the precipitate, evaporate the extra...

Embodiment 3

[0035] 6FHP (3 mmol), 6FDA (1.5 mmol) and fluorine-containing bisphenol A dianhydride (1.5 mmol) were dissolved in 5 mL of DMF, respectively. Then, under a nitrogen atmosphere, mix the 6FHP solution with the solution of 6FDA and fluorine-containing bisphenol A dianhydride, react at room temperature for 24 hours, add 8 mL of magnesium sulfate dried xylene, raise the temperature to 160°C, and continue the reaction for 3 to 10 hours. Water and xylene were distilled off azeotropically. After cooling to room temperature, the reacted solution was added dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate a precipitate and filter to obtain a crude fluorine-containing polyimide. Dissolve the crude product of fluorine-containing polyimide in 10 mL of tetrahydrofuran, and then add this tetrahydrofuran solution dropwise to 200 mL of a mixed solution of methanol / water (1:1) and 2N HCl (2 mL) to precipitate precipitates. Reflux the precipitate wi...

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Abstract

A fluorine-containing polyimide optical waveguide material and its preparation method relate to the preparation method of polymer materials in integrated optical devices, which can be applied to waveguide optical devices. The material is obtained by condensation and copolymerization of three monomers, that is, two Fluorine-containing polyimide is obtained by condensation-copolymerization of amine monomer and one dianhydride monomer or condensation-copolymerization of two dianhydride monomers and one diamine monomer. After purification, it is made into fluorine-containing polyimide N-formaldehyde The base pyrrolidone solution was added dropwise to the center of a clean substrate and spin-coated to form a film, dried and cured. The glass transition temperature of the material is greater than 200°C, the optical loss is less than 0.6dB / cm at 1550nm in the optical communication band, and the refractive index at 1550nm is 1.5-1.6. Spin-coat a layer of photoresist on the fluorine-containing polyimide film, after drying, add a mask for masking, photolithography, development, and then etch by reactive ion etching process to remove the remaining photoresist , made of polymer planar waveguide.

Description

technical field [0001] The invention relates to a fluorine-containing polyimide optical waveguide material and a preparation method thereof, which belongs to the preparation category of polymer materials in integrated optical devices and can be applied to waveguide optical devices. Background technique [0002] In the field of optical communication, polymer optical materials have been extensively studied due to their excellent performance. At present, the applied optical waveguide materials are mainly concentrated on inorganic materials, but the birefringence effect of inorganic materials is large, and they are formed on inorganic material substrates. High-quality thick-film waveguides are difficult and require complex equipment. Polymer materials have the characteristics of many varieties, adjustable structures, various preparation methods, good thermal stability, and low optical loss in the two near-infrared transmission windows (wavelength 1.33 μm and 1.55 μm). The waveg...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02B1/04G02B6/10G02B6/13G02B6/136
Inventor 周钰明刘蓉何曼崔一平张彤
Owner SOUTHEAST UNIV
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