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首页> 外文会议>Conference on Optical Design and Testing; 20071112-15; Beijing(CN) >Michelson interferometer in a 2D photonic crystal utilizing self-collimation effect
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Michelson interferometer in a 2D photonic crystal utilizing self-collimation effect

机译：利用自准直效应的二维光子晶体中的迈克尔逊干涉仪

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摘要

A Michelson interferometer (MI) constructed in a two-dimensional photonic crystal (2D PhC) utilizing self-collimation effect is proposed and investigated theoretically. The 2D PhC consists of a square lattice of air holes in silicon. It has square-shaped equal frequency contours (EFCs) in the frequency range of 0.26-0.275c/a for TE modes. The MI proposed consists of two PhC mirrors and one defect-row splitter. Light propagates between them employing self-collimation effect. The two interferometer branches have different path lengths L_1 and L_2. The FDTD calculation results show that the transmission spectrum from 0.26c/a to 0.275c/a at the MI output port is comb-shaped. The transmission peaks have a uniform spacing. Moreover, the peaks shift to the lower frequencies and the peak spacing decreases when the difference between L_1 and L_2 is increased. For the operating wavelength around 1550nm, the dimensions of this MI are only tens of microns. So this PhC Michelson interferometer may be applied in future photonic integrated circuits.
机译：提出并利用自准直效应构造在二维光子晶体（2D PhC）中的迈克尔逊干涉仪（MI）。 2D PhC由硅中气孔的方阵组成。对于TE模式，它在0.26-0.275c / a的频率范围内具有方形的等频轮廓（EFC）。提出的MI由两个PhC镜和一个缺陷行分离器组成。光利用自准直效应在它们之间传播。两个干涉仪分支具有不同的路径长度L_1和L_2。 FDTD计算结果表明，MI输出端口从0.26c / a到0.275c / a的透射光谱呈梳状。透射峰具有均匀的间隔。此外，当L_1和L_2之间的差异增大时，峰移至较低频率，并且峰间距减小。对于1550nm左右的工作波长，此MI的尺寸仅为几十微米。因此，该迈克尔逊型PhC干涉仪可能会应用于未来的光子集成电路中。

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