用于Mach-Zehnder电光调制器芯层的超支化无机－有机杂化材料

项目名称： 用于Mach-Zehnder电光调制器芯层的超支化无机－有机杂化材料

项目编号： No.50802084

项目类型： 青年科学基金项目

立项/批准年度： 2009

项目学科： 无线电电子学、电信技术

项目作者： 崔元靖

作者单位： 浙江大学

项目金额： 20万元

中文摘要： 高带宽、超高速的电光调制器是光电子领域的关键器件，对经济建设和国防安全都具有十分重要的意义。聚合物基Mach-Zehnder电光调制器与光纤兼容性差、光损耗大、热化学稳定性低，难以满足实用要求。本项目从设计、合成多支结构的有机生色团与硅氧烷染料先驱体入手，采用湿化学、分子自组装技术进行无机、有机基元的键连杂化，研制一类具有超支化结构的新型无机－有机杂化材料，重点解决杂化材料生色团分子的团聚和结构性能不易调控的两大关键问题，以期实现无机－有机杂化材料在Mach-Zehnder电光调制器芯层中的应用。研究无机、有机基元的相互作用以及超支化结构对电光响应、稳定性、光损耗、成膜性的影响规律和调控机理，揭示杂化材料在电光调制器中产生的一些新现象和新效应，为杂化材料在有源光电子器件中的应用提供设计思想、合成技术和理论依据。

中文关键词： 无机－有机杂化；超支化；电光调制；硅氧烷

英文摘要： The high-speed electro-optic (EO) modulators with a wide bandwidth over 100 GHz will play a key role in optoelectronics, which have become increasingly important for economic development and defense. However, all polymeric Mach-Zehnder EO modulators suffer from low optical throughout due to coupling losses between optical fibers and polymeric waveguides arising from mode-overlap factors, and high intrinsic optical losses in EO polymers. Furthermore, unstable coupling can exist due to thermochemical or photochemical reactions, which alter refractive indices in EO polymers. In this project, several novel organic chromophores and alkoxysilane dyes with multi-branch structure are designed and synthesized, and then a serial of hyperbranched inorganic-organic hybrid materials are prepared through sol-gel method or layer-by-layer self-assembling process. In this way, the problems of chromophores-aggregation and structure-modification could be solved, and the hyperbranched hybrid materials could be expected to achieve application for core layer in Mach-Zehnder EO modulator. The process, condition and mechanism of the inductive effect between the inorganic and organic components are investigated in molecular level, as well as the influence of structure in EO response, stabilities, optical loss and film forming ability are well illustrated. Some new phenomena and new effect of hyperbranched hybrid inorganic-organic materials in EO modulator are revealed, which will offer the theoretical basis and mechanism for the application of hybrid materials in active optoelectronic devices.

英文关键词： inorganic-organic hybrid; hyperbranched; electro-optic modulator; alkoxysilane;