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Research And Application Of Organic/Inorganic Hybrid EO Material

Posted on:2006-05-07Degree:MasterType:Thesis
Country:ChinaCandidate:R F LeiFull Text:PDF
GTID:2168360155953448Subject:Microelectronics and Solid State Electronics
Abstract/Summary:PDF Full Text Request
The enormous demands for the amount of information of people have stimulated the development at full speed of fiber optic communication technology, one is the technology of WDM, the other is the technology of OTDM. The high frequency devices and systems of these two aspects begin commercialization, in order to meet the needs of these devices and systems, high-performance device and material are being expanded constantly. The excellent performance of the polarized polymer, for example the high EO coefficient, little chromatic dispersion, easy integration and processing technology, become a wonderful work of EO material field and develop in recent years. Among them, the non-linear organic /inorganic hybrid material demonstrate it's advantage in the numerous EO polymer materials, such as high optics transparency, high density of chromophore molecule, excellent hot stability, good mechanical performance. The thesis add the chromophore molecule DR1 and silicon alkanisation reagent form the covalent bond and gain SG-DR1 through reacting, then incorporate with TEOS by the sol-gel way, prepare the optics transparent organic / inorganic hybrid material film, which the thickness is 1.2—1.5μm. Influence factor in the hydrolysis course of sol-gel way is carried on detailed explanation and analysis. The main influence factor is solvent , temperature and catalyst. Among them the choice of the catalyst is the most important, it is divided into alkali catalysis and acid catalysis. The speed of aggregation is slow at the time of the alkali catalysis because of the effect of counteraction; the gel time is short at the time of the acid catalysis, so sol-gel course is controlled by the hydrolysis course. The solvent of organic/inorganic hybrid material is DMF, the hydrolysis condition is that the reaction is carried under room temperature catalyzed by acid water (PH=1). The tiny process is carried on detailed explanation and analysis when the organic/inorganic hybrid film is cured and polarized. Three kinds of competition course will take place in the organic/inorganic hybrid film, the polymerization of TEOS, the aggregation of chromophore molecule DR1 and the volatilization of solvent. These competition courses is affected by the concentration of chromophore molecule DR1, the thickness of film, the speed of spin-coating, temperature, the value of PH. The polarization mode and theory is carried on detailed explanation and analysis in the thesis, the polarization modes have two kinds of polarization, corona polarization and contact polarization. According to their characteristics and the actual demand of material, the corona polarization is selected in the thesis. The speed of rising temperature is one of the factors influencing EO coefficient whiling poling. the polarized organic/inorganic hybrid film is measured by simple reflection technique in the thesis. The organic/inorganic hybrid film is cured under 120oC and polarized under 150oC by parallel pole under the protection of nitrogen N2., the EO coefficient is obtained on the device of simple reflection technique, the value of r33 for the organic/inorganic hybrid film is 9.6pm/V. The polarized organic/inorganic hybrid film has good stability, the value of r33 can keep 12 days without any relaxation under room temperature. Compare with the "host-guest"non-linear material PMMA-GMA +DR1, the stability of the organic/inorganic hybrid material has improved. It can be applied to many polymer devices that the demand of temperature isn't strict, such as polymer probe and polymer modulator. The thesis uses the organic/inorganic hybrid material as the core of the single pattern ridge wave-guide for M-Z type modulator, select the ultraviolet-cure polymer satisfied certain thermodynamics, electricity matching as envelope, fabricate the single...
Keywords/Search Tags:Organic/Inorganic
PDF Full Text Request
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