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    • 2. 发明申请
    • Optical attenuator using multi-mode interference
    • 光衰减器采用多模干扰
    • US20030053788A1
    • 2003-03-20
    • US10004811
    • 2001-12-07
    • Doohwan LEE
    • Doohwan LeeSangsun Lee
    • G02B006/26
    • G02F1/225G02F1/0147G02F2001/217G02F2203/48
    • An optical attenuator includes a first multi-mode waveguide varying a phase of an optical signal input through an input terminal; first and second single-mode waveguides having an input terminal coupled to an output terminal of the first multi-mode waveguide and varying a phase of the optical signal by a thermo-optic effect by electrodes attached thereto; and a second multi-mode waveguide having an input terminal coupled to an output terminal of the first and second single-mode waveguides and varying a phase of the optical signal, wherein a predetermined optical power distribution obtained by offsetting or adding up a phase varied in the first and second multi-mode waveguides and a phase varied by the thermo-optic effect is transferred to an output terminal of the second multi-mode waveguide.
    • 光衰减器包括改变通过输入端输入的光信号的相位的第一多模波导; 第一和第二单模波导具有耦合到第一多模波导的输出端的输入端,并且通过附着于其上的电极的热光效应改变光信号的相位; 以及第二多模式波导,其具有耦合到第一和第二单模波导的输出端的输入端,并改变光信号的相位,其中通过偏移或相加在第 第一和第二多模波导和由热光效应变化的相位被传送到第二多模波导的输出端。