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    • 1. 发明申请
    • OPTICAL WAVEGUIDE AND ARRAYED WAVEGUIDE GRATING
    • 光波导和阵列波导光栅
    • US20130058608A1
    • 2013-03-07
    • US13698573
    • 2011-05-10
    • Keiichi MoritaKazumi ShimizuKouji KawashimaTomoharu Niitsu
    • Keiichi MoritaKazumi ShimizuKouji KawashimaTomoharu Niitsu
    • G02B6/34
    • G02B6/12014G02B6/12011G02B6/2813G02B6/29344
    • A technique that does not increase the circuit size, does not make the circuit design and manufacturing difficult, and can reduce insertion loss when light enters from a slab waveguide toward an arrayed waveguide or when the light enters from the arrayed waveguide toward the slab waveguide. An optical waveguide provided with a slab waveguide in which a grating is formed therein at a distance from an end, and an arrayed waveguide whose end is connected to an end of the slab waveguide at a position where a constructive interference portion of a self-image of the grating is formed. An arrayed waveguide grating provided with a first input/output waveguide, the above-mentioned optical waveguide where an end of the slab waveguide on the opposite side of the arrayed waveguide is connected to an end of the first input/output waveguide, a second slab waveguide connected to an end of the arrayed waveguide on the opposite side of the slab waveguide, and a second input/output waveguide connected to an end of the second slab waveguide on the opposite side of the arrayed waveguide.
    • 不增加电路尺寸的技术不会使电路设计和制造困难,并且当光从平板波导朝向阵列波导进入时或当光从阵列波导进入平板波导时可以减少插入损耗。 一种具有平板波导的光波导,其中在其中与一端距离形成光栅,以及阵列波导,其端部连接到平板波导的一端,其中自身图像的构造干涉部分 形成光栅。 设置有第一输入/输出波导的阵列波导光栅,上述光波导,其中阵列波导的相对侧上的平板波导的端部连接到第一输入/输出波导的端部,第二平板 波导连接到平板波导的相对侧的阵列波导的端部,以及连接到阵列波导的相对侧的第二平板波导的端部的第二输入/输出波导。