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基于对光纤传输特性和胶体光子晶体制备方法的研究,提出了用外加电场控制的方法制备光子带隙位于通讯波段的FCC结构的胶体光子晶体,并用光纤系统测试胶体光子晶体的带隙特性。采用RSOFT模拟了胶体光子晶体的带隙,分析了带隙位于通讯波段时所需的胶体微球的基本参量(微球折射率和直径)。采用自组装的方法,用步进电机控制玻璃基片向上的拉升速率,速率为5μm/s,同时外加一电场。用扫描电镜观测胶体晶体的表面形貌,并设计了单模光纤系统测量胶体光子晶体的带隙特性。测试的透射谱线表明胶体光子晶体的带隙中心波长为1552nm。测试结果和模拟结果具有很好的一致性,误差只有2nm。
Based on the research of optical fiber transmission characteristics and colloidal photonic crystal preparation methods, a colloidal photonic crystal with FCC structure with photonic bandgap in the communication band was prepared by applying electric field control. The bandgap characteristics of colloidal photonic crystals were tested by optical fiber system. The band gap of colloidal photonic crystal was simulated by RSOFT, and the basic parameters (microsphere refractive index and diameter) of the colloidal microspheres required when the band gap was located in the communication band were analyzed. Using a self-assembly method, a stepper motor was used to control the rate of pull-up of the glass substrate at a rate of 5 μm / s while applying an electric field. The surface morphology of colloidal crystals was observed by scanning electron microscopy. The single-mode optical fiber system was designed to measure the band gap of colloidal photonic crystals. The measured transmission spectra show that the bandgap center wavelength of the colloidal photonic crystal is 1552 nm. Test results and simulation results have good consistency, the error is only 2nm.