二维光子晶体滤波器的研究

Research on Two-Dimensional Photonic Crystal Filter

传统的滤波器体积大,滤波性能差,利用点缺陷微腔的选频功能以及落在光子晶体禁带频率范围之内的光信号禁止传播这一特性,设计了一款滤波性能高,尺寸只有13.215um×11.1um的光子晶体多信道滤波器,该滤波器由一个主波导、四个微腔、四个下载波导以及在末端镶嵌大半径硅柱作为反射异质结构成,在微腔介质柱半径可调范围之内,可以实现特定波长的高效输出,在未来光电方面的发展具有潜在利用价值。

The traditional filter is large in size and poor in filtering performance.Using the frequency selection function of point defect microcavity and the forbidden propagation of optical signal falling within the forbidden band frequency range of photonic crystal,a high filtering performance photonic crystal multichannel filter with the size of only 13.215um×11.1um is designed.The filter consists of a main waveguide,four microcavities,four download waveguides and at the end As a reflection heterostructure,the embedded large radius silicon column can achieve high-efficiency output of specific wavelength within the adjustable radius of the microcavity dielectric column,which has potential value in the future development of optoelectronics.