Fiber optic angular rate sensor including digital phase modulation
    1.
    发明授权
    Fiber optic angular rate sensor including digital phase modulation 失效
    光纤角速率传感器包括数字相位调制

    公开(公告)号:US5400142A

    公开(公告)日:1995-03-21

    申请号:US237526

    申请日:1994-05-03

    Inventor: Thomas J. Lavin

    CPC classification number: G01C19/721

    Abstract: A digital phase modulation arrangement for a fiber optic angular rate sensor utilizes Pockels electro-optical effect operating in the transverse mode. Light travels around a fiber optic coil in clockwise and counterclockwise directions. An error signal corresponding to the phase difference between the clockwise and counterclockwise traveling light is applied to a digital processor which provides a plurality of logic bits. The logic bits are applied to voltage/phase transducers arranged on an integrated optics chip. The voltage/phase transducers are switched from an applied reference voltage to a particular voltage level to induce a phase change through Pockels electro-optical effect.

    Abstract translation: 用于光纤角速率传感器的数字相位调制装置利用在横向模式下工作的普克尔斯电光效应。 光沿顺时针和逆时针方向绕光纤线圈传播。 对应于顺时针和逆时针行进光的相位差的误差信号被施加到提供多个逻辑位的数字处理器。 逻辑位被应用于布置在集成光学芯片上的电压/相位变换器。 电压/相位传感器从施加的参考电压切换到特定的电压电平,以通过Pockels电光效应引起相位变化。

    Pneumatically dithered ring laser gyroscope
    2.
    发明授权
    Pneumatically dithered ring laser gyroscope 失效
    气动啁啾环激光陀螺仪

    公开(公告)号:US5317381A

    公开(公告)日:1994-05-31

    申请号:US408826

    申请日:1989-09-18

    Inventor: Thomas J. Lavin

    CPC classification number: G01C19/70

    Abstract: A pneumatically dithered ring laser gyroscope features providing an oscillatory motion directly to a segment of the excited gas which serves as the laser photon source. Alternately switching ionizing potential between two cathodes in appropriately designed cavities establishes desired oscillatory gas velocities to effect emitted frequencies within the gyro, thereby permitting the detection of rotational rates below the "lock-in" rate of the undithered gyro.

    Abstract translation: 气动抖动环形激光陀螺仪特征在于作为激光光源的激发气体的一部分直接提供振荡运动。 在适当设计的空腔中的两个阴极之间交替地切换电离电位建立了期望的振荡气体速度以实现陀螺仪内的发射频率,从而允许将检测到的转速低于未启动陀螺仪的“锁定”速率。

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