INDUCTANCE-TUNED ELECTRO-OPTIC MODULATORS
    10.
    发明申请
    INDUCTANCE-TUNED ELECTRO-OPTIC MODULATORS 有权
    电感式电光调制器

    公开(公告)号:US20160202592A1

    公开(公告)日:2016-07-14

    申请号:US14294422

    申请日:2014-06-03

    IPC分类号: G02F1/225 G02F1/017 G02B6/14

    摘要: An electro-optic modulator imparts the information contained in an electrical signal traveling along a transmission line onto an optical carrier by using signal-related variations in the electrical signal's voltage to modulate the refractive index or absorption in an electro-optic material through which the optical carrier propagates. For optimal bandwidth and modulation efficiency, the microwave and optical waves should be matched in velocity. However, conventional microwave transmission lines have a microwave velocity that is somewhat higher than the optical group velocity in typical optical waveguides. Tuning a microwave transmission line's capacitance reduces the microwave velocity, but also reduces the impedance below the 50Ω impedance of most microwave components. Conversely, tuning the microwave transmission line's inductance makes it possible to match the microwave velocity to the optical group velocity over bandwidths of 100 GHz or greater while maintaining a microwave impedance of 50Ω.

    摘要翻译: 电光调制器通过使用电信号电压中的信号相关变化将包含在沿着传输线行进的电信号中的信息传递到光载体上,以调制电光材料中的折射率或吸收,通过光电材料 载波传播。 为了获得最佳的带宽和调制效率,微波和光波的速度应该匹配。 然而,传统的微波传输线的微波速度略高于典型光波导中的光群速度。 调谐微波传输线的电容降低了微波的速度,同时也降低了低于50Ω的阻抗; 大部分微波元件的阻抗。 相反,调谐微波传输线的电感可以使微波速度与100 GHz或更大带宽上的光学组速度相匹配,同时保持微波阻抗为50Ω。