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    • 9. 发明授权
    • 다중 모드 간섭을 이용한 가변 광감쇄기
    • 다중모드간섭을이용한가변광감쇄기
    • KR100424606B1
    • 2004-03-27
    • KR1020010055625
    • 2001-09-10
    • 이두환
    • 이두환이상선
    • G02B6/00
    • 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.
    • 一种光衰减器包括:第一多模波导,其改变通过输入端输入的光信号的相位; 第一和第二单模波导,其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,通过热光效应改变光信号的相位; 以及第二多模波导,其具有耦合到所述第一和第二单模波导的输出端子并且改变所述光信号的相位的输入端子,其中通过偏移或相加获得的预定光功率分布改变 第一和第二多模波导以及由热光效应改变的相位被传送到第二多模波导的输出端。