Arrayed waveguide grating with reduced crosstalk
    1.
    发明授权
    Arrayed waveguide grating with reduced crosstalk 有权
    阵列波导光栅具有减小的串扰

    公开(公告)号:US06526203B1

    公开(公告)日:2003-02-25

    申请号:US09870535

    申请日:2001-05-30

    IPC分类号: G02B634

    摘要: Arrayed Waveguide Grating with Reduced Crosstalk An Arrayed Waveguide Grating (AWG) having reduced adjacent crosstalk is described. Interspersed ones (21) of the output waveguides of the AWG are of different widths to the remaining output waveguides (23), along corresponding portions of their lengths, preferably in at least an initial portion of the fan-out region. Passband unifonmity is maintained by making all the output waveguides substantially of the same width at the output slab coupler. In the illustrative embodiment, alternate ones of the plurality of output waveguides are tapered to a narrower width (W2) between first and second portions (22,24) thereof and the remaining ones of the output waveguides are of a substantially uniform width (W1) between corresponding first and second portions thereof.

    摘要翻译: 具有减少串扰的阵列波导光栅描述了具有减小的相邻串扰的阵列波导光栅(AWG)。 AWG的输出波导的散射体(21)与剩余的输出波导(23)的长度相对应的部分具有不同的宽度,优选至少在扇出区域的初始部分。 通过使输出平板耦合器的所有输出波导基本上具有相同的宽度来保持通带单一性。 在说明性实施例中,多个输出波导中的交替的输出波导在其第一和第二部分(22,24)之间变窄到较窄的宽度(W2),其余的输出波导具有基本均匀的宽度(W1) 在其对应的第一和第二部分之间。