Magnetic photonic crystal structure for providing spatial frequency asymmetry for light propagating in different directions
    8.
    发明授权
    Magnetic photonic crystal structure for providing spatial frequency asymmetry for light propagating in different directions 有权
    磁光子晶体结构为不同方向传播的光提供空间频率不对称

    公开(公告)号:US07570414B2

    公开(公告)日:2009-08-04

    申请号:US11156042

    申请日:2005-06-17

    IPC分类号: G02F1/09 G02F1/03 G02F1/07

    CPC分类号: B82Y20/00 G02B6/1225

    摘要: A magnetic photonic crystal for providing asymmetry of spatial frequencies in the propagation of light is provided. The crystal is formed from at least two materials having different indices of refraction which are aligned along the longitudinal axis of the crystal. And arranged in an array whose symmetry does not include a spatial inversion operator such that (x,y)==/=(−x,−y). One or more of the materials forming the array is magnetic such that the magnetic group representation of the array does not include time inversion as a symmetric operator. In operation, when the magnetic material forming the material is magnetized, the group velocity property of light propagated in one direction along the axis of the array is different from the group velocity property of light transmitted in an opposite direction through the array. The magnetic photonic crystal may be used, for example, as an optical memory device or a high speed modulator/demodulator.

    摘要翻译: 提供了一种用于在光传播中提供空间频率不对称的磁光子晶体。 晶体由具有不同折射率的至少两种材料形成,其沿着晶体的纵向轴线排列。 并且排列成阵列,其对称性不包括空间反演算子,使得(x,y)== / =( - x,-y)。 形成阵列的一种或多种材料是磁性的,使得阵列的磁组表示不包括作为对称算子的时间反演。 在操作中,当形成材料的磁性材料被磁化时,沿着阵列的轴在一个方向上传播的光的组速度特性不同于沿与阵列相反的方向透射的光的组速度特性。 磁光子晶体可以用作例如光存储器件或高速调制器/解调器。