FCC结构胶体光子晶体的制备及其带隙特性测量

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5 μm/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1552 nm。测试结果和模拟结果具有很好的一致性,误差只有2 nm。

Abstract

Based on the transmission characteration of optical fiber and the methods of fabrication colloidal photonic crystals,electric field-controlled method is used to fabricate colloidal photonic crystals with the photonic band-gap(PBG) in communications wavelength. RSOFT is used to simulate PBG characteration of colloidal photonic crystals and the parameters of colloidal microsphere are obtained. By the self-assembled method,the stepping motor is used to control the glass substrate,with the rate of 5 μm/s. At the same time an electric field is applied in the process of the colloidal crystals growth. The scanning electron microscopy is used to observe the surface of colloidal photonic crystals. An optical fiber system is designed to test PBG center wavelength of colloidal photonic crystals. Transmission spectrum shows the PBG of this colloidal crystals at 1552 nm. The agreement is very good between the experimental results and the simulation results,with the error of only 2 nm.

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闫海涛, 王鸣, 葛益娴, 喻平, 刘青. FCC结构胶体光子晶体的制备及其带隙特性测量[J]. 光学学报, 2009, 29(10): 2905. Yan Haitao, Wang Ming, Ge Yixian, Yu Ping, Liu Qing. Fabrication of FCC Structure Colloidal Photonic Crystals and Characteration of Band-Gap Measured[J]. Acta Optica Sinica, 2009, 29(10): 2905.

FCC结构胶体光子晶体的制备及其带隙特性测量

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