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    • 7. 发明授权
    • Channel add/drop filter and channel monitor employing two-dimensional photonic crystal
    • 通道加/减滤波器和采用二维光子晶体的通道监视器
    • US07046878B2
    • 2006-05-16
    • US10708525
    • 2004-03-10
    • Susumu NodaYoshihiro AkahaneTakashi Matsuura
    • Susumu NodaYoshihiro AkahaneTakashi Matsuura
    • G02B6/27
    • G02B6/1225B82Y20/00
    • The channel add/drop filter includes first and second 2D photonic crystals, and the first 2D photonic crystal includes a first waveguide and a first cavity, with the first cavity acting to take in light of a specific wavelength from the first waveguide and radiate it outside the first photonic crystal, and the second 2D photonic crystal includes a second waveguide with substantially the same characteristics as the first waveguide and a second cavity with substantially the same characteristics as the first cavity. The first and second waveguides are optically connected so that when the principal plane of the first 2D photonic crystal and the electric-field vector of the light within the first waveguide torn, an arbitrary angle α, the principal plane of the second 2D photonic crystal and the electric-field vector of the light within the second waveguide form an angle of α+(π/2).
    • 通道分插滤波器包括第一和第二2D光子晶体,并且第一2D光子晶体包括第一波导和第一腔,第一腔用于从第一波导吸收特定波长的光,并将其辐射到外部 第一光子晶体和第二2D光子晶体包括具有与第一波导基本相同的特性的第二波导和具有与第一空腔基本相同的特性的第二腔。 第一和第二波导被光学连接,使得当第一2D光子晶体的主平面和第一波导内的光的电场矢量撕裂时,任意角度α,第二2D光子晶体的主平面和 第二波导内的光的电场矢量形成α+(pi / 2)的角度。
    • 8. 发明授权
    • Two-dimensional photonic crystal cavity and channel add/drop filter
    • 二维光子晶体腔和通道分插滤波器
    • US07450810B2
    • 2008-11-11
    • US11537663
    • 2006-10-02
    • Susumu NodaTakashi AsanoYoshihiro Akahane
    • Susumu NodaTakashi AsanoYoshihiro Akahane
    • G02B6/10
    • G02B6/1225B82Y20/00
    • In 2D photonic crystals, cavities having a heightened Q factor are made available, wherein combining the high Q cavities with waveguides affords channel add/drop filters having high resolution. In a cavity constituted by a point defect within a 2D photonic crystal, the 2D photonic crystal is configured by an arrangement, in a two-dimensional lattice of points defined in a slab (1), of low-refractive-index substances (2) having a low refractive index relative to the slab (1) and being of identical dimension and shape. The point defect (4) contains a plurality of three or more lattice points that neighbor one another, and in these lattice points no low-refractive-index substances (2) are arranged; therein the dimension of the low-refractive-index substance (2) that should be arranged to correspond to at least one of the lattice points nearest the point defect (4) is dimensionally altered from a predetermined dimension.
    • 在2D光子晶体中,具有提高的Q因子的空腔可用,其中将高Q腔与波导组合提供具有高分辨率的通道加/减滤波器。 在由2D光子晶体内的点缺陷构成的空腔中,2D光子晶体由低折射率物质(2)的平板(1)中限定的点的二维晶格中的布置构成, 具有相对于板坯(1)的低折射率并且具有相同的尺寸和形状。 点缺陷(4)包含彼此相邻的多个三个以上的格子点,并且在这些格子点中不设置低折射率物质(2); 其中应当被布置为对应于最接近点缺陷(4)的格点中的至少一个的低折射率物质(2)的尺寸从预定尺寸尺寸地改变。
    • 9. 发明申请
    • Two-Dimensional Photonic Crystal Resonator
    • 二维光子晶体谐振器
    • US20070297722A1
    • 2007-12-27
    • US10569729
    • 2004-08-24
    • Susumu NodaTakashi AsanoBong-Shik SongYoshihiro Akahane
    • Susumu NodaTakashi AsanoBong-Shik SongYoshihiro Akahane
    • G02B6/122G02B6/26
    • B82Y20/00G02B6/1225
    • The present invention intends to provide a two-dimensional photonic crystal resonator having a high Q-value. The slab-shaped body 21 is provided with cyclically arranged holes 22. The body 21 is divided into three areas 31-33 with the holes 22 arranged with cycle distances of a1 in area 31 and a2 in areas 32 and 33, which is smaller than a1. A waveguide 23 passing through the three areas is formed by linearly eliminating the holes 22. The waveguide 23 thus formed can propagate rays of light within a wavelength band that depends on the cycle distance of the holes 22. The cycle distance of the holes in the area 31 differs from that of the areas 32 and 33, and the wavelength band of the light propagating through the waveguide accordingly differs. Therefore, a ray of light whose wavelength is within the waveguide transmission wavelength band of the area 31 but outside of the waveguide transmission wavelength band of the other areas 32 and 33 will be confined within the waveguide of the area 31 and resonate therein. Thus, the waveguide in the area 31 functions as a resonator.
    • 本发明旨在提供具有高Q值的二维光子晶体谐振器。 板状体21设置有循环布置的孔22.主体21被分成三个区域31-33,其中孔22布置成在区域31中具有“1”的循环距离,而 2 在区域32和33中,小于1 <1> 。 穿过三个区域的波导23通过线性消除孔22形成。如此形成的波导23可以在取决于孔22的循环距离的波长带内传播光线。孔中的循环距离 区域31与区域32和33的区别不同,并且通过波导传播的光的波段相应地不同。 因此,其波长在区域31的波导传输波长带内但其他区域32和33的波导传输波长带之外的光线将被限制在区域31的波导内并在其中谐振。 因此,区域31中的波导用作谐振器。