Electro-optical polarized polymer containing nano ferroelectric crystals, and preparation method

A technology of polarized polymers and nanocrystals, which is applied in the field of electro-optic polarized polymers and their preparation, can solve problems such as SBN and PZT single crystal difficulties, and achieve the effects of low cost, low optical loss and strong application prospects
CN1563194AInactive Publication Date: 2005-01-12NANJING UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV
Publication Date
2005-01-12
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

In the method, ferroelectric nonocrystal is distributed uniformly in transparent film polymer as ferroelectric material is made from strontium barium niobate, lead zirconate titanate, lanthanum doped lead zirconate titanate, BaTiO3, LiNbO3, or LiTaO3 with nanocrystal particle diameter of 20-80 nm; polymer base material is made from polymethyl methyl acrylate, polycarbonate, polyimide sort and thermoplastic polyamic acid. The prepare process includes polymerizing ferroelectric nanocrystal in the polymer in polymerization procedure of dissolving nanocrystal and polymer in polar solvent and depositing film by soaking or spinning.
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Description

1. Technical field

[0001] The invention relates to an electro-optical polarized polymer containing ferroelectric nanocrystals and a preparation method thereof. 2. Background technology

[0002] Polarized polymers are polymer materials with macroscopic second-order nonlinearity. They have the characteristics of fast response time, easy modification, easy integration, and easy processing. They have important applications in integrated optoelectronic devices and photonic devices. In recent years, WDM (Wavelength Division Multiplexing) all-optical network has developed rapidly, and the speed of optical switches has become a bottleneck problem restricting the development of optical communication, which makes polarized polymer materials become the key materials in the development of WDM. At present, the well-developed mechanical switches, acousto-optic switches and inorganic waveguide switches represented by lithium niobate limit their long-term application due to slow response sp...

Claims

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