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    • 4. 发明授权
    • Optical device
    • 光学装置
    • US06865306B2
    • 2005-03-08
    • US10360739
    • 2003-02-10
    • Masaharu DoiShinji TaniguchiMasaaki OhyamaMasaaki Norimatsu
    • Masaharu DoiShinji TaniguchiMasaaki OhyamaMasaaki Norimatsu
    • G02F1/03G02F1/225H04B10/155G02B6/12
    • G02F1/2255G02F1/0316H04B10/505
    • The invention provides an optical device which can lower the drive voltage which is used as one of the parameters for performance evaluation of the optical device. The optical device includes a substrate having first and second ridges, first and second grooves, a third groove, and first and second banks formed thereon, a Mach-Zehnder optical waveguide formed on the substrate, and an electrode set including first and second signal electrodes and a grounding electrode for controlling light which propagates in the optical wveguide. The grounding electrode extends to the first groove adjacent to the first bank and the second groove adjacent to the second bank. The optical device is applied, for example, to a transmission side apparatus for a long distance optical transmission system.
    • 本发明提供一种能够降低作为用于光学装置的性能评估的参数之一的驱动电压的光学装置。 光学装置包括具有第一和第二脊的基板,第一和第二凹槽,第三凹槽以及形成在其上的第一和第二凹槽,形成在基板上的马赫 - 曾德光波导,以及包括第一和第二信号电极 以及用于控制在光波导中传播的光的接地电极。 接地电极延伸到与第一组相邻的第一凹槽和与第二组相邻的第二凹槽。 光学装置例如用于长距离光传输系统的发送侧装置。