Advanced drive circuitry for Sagnac interferometric switch utilizing faraday rotation
    1.
    发明授权
    Advanced drive circuitry for Sagnac interferometric switch utilizing faraday rotation 有权
    用于采用法拉第旋转的Sagnac干涉式开关的先进驱动电路

    公开(公告)号:US09110317B1

    公开(公告)日:2015-08-18

    申请号:US13440355

    申请日:2012-04-05

    IPC分类号: G02F1/095 G02F1/313

    摘要: A pre-pulsed magnetic field generation circuit for a fiber-based, magneto-optic (MO) optical modulator or switch for use in an interferometer is provided. The pre-pulsed magnetic field is used to control the amount of rotation in the state of polarization (SOP), and therefore, the ON-OFF extinction ratio. The circuit includes a pair of amplifier circuits that control the current through a coil to generate the pre-pulsed magnetic field. One amplifier controls a magnitude of a steady state portion of the magnetic field, while the other controls both the amplitude and duration of a pre-pulse portion of the magnetic field.

    摘要翻译: 提供了用于干涉仪中的用于光纤的磁光(MO)光调制器或开关的预脉冲磁场产生电路。 预脉冲磁场用于控制偏振状态(SOP)中的旋转量,因此控制ON-OFF消光比。 该电路包括一对放大器电路,其控制通过线圈的电流以产生预脉冲磁场。 一个放大器控制磁场的稳态部分的大小,而另一个控制磁场的预脉冲部分的幅度和持续时间。