Modification of Thermo-Optic Characteristics of Sol-Gel Inorganic-Organic Hybrid Materials |
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Authors: | Eun-Seok Kang Woo-Soo Kim Kwang-Soo Kim Byeong-Soo Bae |
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Institution: | (1) Department of Materials Science and Engineering, Laboratory of Optical Materials and Coating (LOMC), Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea |
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Abstract: | The effect of the inorganic oxide network on the variation of thermo-optic characteristics (dn/dT) in inorganic-organic hybrid material prepared through the sol-gel process was investigated. The dn/dT values were negative for all samples, and decreased in magnitude with the increasing concentration of the inorganic oxide or heterometallic oxide network. The dn/dT also became less negative with the increase in the degree of inorganic condensation in sol-gel reaction. A negative dn/dT value is consistent with thermal expansion of the material, and it is believed that the value of the dn/dT in our inorganic-organic hybrid materials was principally sensitive to variations in expansion term. |
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Keywords: | sol-gel hybrid material HYBRIMER thermo-optic coefficient waveguide |
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