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    • 74. 发明授权
    • Method for higher-order dispersion compensation
    • 高阶色散补偿方法
    • US06829409B2
    • 2004-12-07
    • US10323301
    • 2002-12-18
    • Barry J. KochTerry L. SmithBarbara A. DeBaun
    • Barry J. KochTerry L. SmithBarbara A. DeBaun
    • G02B626
    • G02B6/278H04B10/2519H04B10/2569
    • A method for compensating for higher-order dispersion of an incoming optical communications signal in accordance with the present invention includes the steps of compensating the signal for first order polarization mode dispersion; compensating the signal for second order polarization mode dispersion; and compensating the signal for variable chromatic dispersion. Additionally, the method may include the steps of compensation for fixed chromatic dispersion and controlling the polarization of the incoming signal. The signal may be monitored after the compensating steps and the degree of compensation may be tuned based on the monitoring. The step of compensating the signal for first order polarization mode dispersion may include the steps of controlling the polarization of the signal; splitting the signal into a first and a second orthogonal polarization components; reflecting the first polarization component in a fixed linearly chirped grating; reflecting the second polarization component in a tuned linearly chirped grating; and recombining the first and the second polarization components.
    • 根据本发明的用于补偿入射光通信信号的高阶色散的方法包括以下步骤:补偿一阶偏振模色散的信号; 补偿二阶偏振模色散的信号; 并补偿可变色散的信号。 此外,该方法可以包括补偿固定色散并控制输入信号的偏振的步骤。 可以在补偿步骤之后监视信号,并且可以基于监视来调整补偿程度。 补偿一阶偏振模色散信号的步骤可包括控制信号极化的步骤; 将信号分解成第一和第二正交偏振分量; 反映固定线性啁啾光栅中的第一偏振分量; 反映调谐线性啁啾光栅中的第二偏振分量; 并重新组合第一和第二偏振分量。
    • 75. 发明授权
    • System for polarization mode dispersion compensation
    • 偏振模色散补偿系统
    • US06748126B2
    • 2004-06-08
    • US10036987
    • 2001-12-31
    • Barry J. KochTerry L. SmithBarbara A. DeBaun
    • Barry J. KochTerry L. SmithBarbara A. DeBaun
    • G02B600
    • G02B6/278G02B6/105G02B6/2932G02B6/29394H04B10/2569
    • An adaptive polarization mode dispersion compensator including a polarization controller and a differential polarization delay unit. The polarization controller converts incoming light of an arbitrary polarization to a controller output signal having a desired state of polarization. The differential polarization delay unit is optically coupled to receive the controller output signal from the polarization controller. The differential polarization delay unit includes a polarization beam splitter element and a first and a second birefringent optical waveguide. At least one tuning mechanism is coupled to at least one of the gratings, wherein the tuning mechanism variably adjusts one of the reference reflection points with respect to the other reference reflection point. A combiner element recombines the two reflected orthogonal polarization signals into a delay line output. A signal quality analyzer evaluates the quality of the differential polarization delay unit output signal and provides a control signal to the polarization controller and the differential polarization delay unit.
    • 一种包括偏振控制器和差分偏振延迟单元的自适应偏振模色散补偿器。 偏振控制器将任意偏振的入射光转换为具有期望的偏振状态的控制器输出信号。 差分偏振延迟单元被光学耦合以从偏振控制器接收控制器输出信号。 差分偏振延迟单元包括偏振分束器元件和第一和第二双折射光波导。至少一个调谐机构耦合到至少一个光栅,其中调谐机构相对于参考反射点可变地调节参考反射点之一 到另一个参考反射点。 组合器元件将两个反射的正交偏振信号重新组合成延迟线输出。 信号质量分析器评估差分极化延迟单元输出信号的质量,并向偏振控制器和差分偏振延迟单元提供控制信号。
    • 76. 发明授权
    • Vehicle-mounted conveyor system including powered rotating infeed conveyor
    • 车载输送机系统,包括动力旋转进料输送机
    • US06378686B1
    • 2002-04-30
    • US09324314
    • 1999-06-02
    • Martin G. MayerTerry L. Smith
    • Martin G. MayerTerry L. Smith
    • B65G1522
    • B65G21/14B65G41/005E04G21/04E04G21/0409
    • A vehicle-mounted conveyor system including an infeed conveyor assembly mounted for powered rotation relative to the vehicle. The conveyor system includes a discharge conveyor assembly pivotally mounted to a main turret, which in turn is mounted to a primary turntable for powered rotation relative to the vehicle. The discharge conveyor assembly includes a telescoping boom and a moving discharge conveyor belt to supply an aggregate material, such as concrete, to a desired point at the work site. An infeed conveyor assembly is rotatably mounted to the main turret by a powered secondary turntable. The powered secondary turntable is mechanically driven by a drive mechanism, such that the infeed conveyor assembly can be rotated relative to the main turret. The secondary turntable and the primary turntable are independently operable and rotate about a common vertical axis, such that the infeed conveyor assembly and the discharge conveyor assembly can be independently rotated relative to the vehicle.
    • 一种车载输送机系统,其包括相对于车辆进行动力旋转的进料输送机组件。 输送机系统包括枢转地安装到主转塔的排放输送机组件,该主转台又安装到相对于车辆动力旋转的主转台。 排放输送机组件包括伸缩式起重臂和移动的卸料输送带,用于将诸如混凝土的骨料材料提供到工作现场的所需点。 进料输送机组件通过动力二次转台可旋转地安装在主转塔上。 动力二次转盘由驱动机构机械驱动,使得进料输送机组件可相对于主转塔旋转。 次级转盘和主转盘可独立操作并围绕公共垂直轴线旋转,使得进料输送机组件和排出输送机组件可以相对于车辆独立地旋转。
    • 77. 发明授权
    • System for tuning an integrated optical switch element
    • 用于调谐集成光开关元件的系统
    • US5566263A
    • 1996-10-15
    • US408214
    • 1995-03-22
    • Terry L. SmithDaniel V. AttanasioJames E. WatsonGeorge R. Hare
    • Terry L. SmithDaniel V. AttanasioJames E. WatsonGeorge R. Hare
    • G02F1/313G02F1/01G02B6/35
    • G02F1/0123G02F1/3132G02F1/3136G02F1/3137
    • A system for tuning an integrated optical switch element utilizes a reflection from a light signal that is propagated into a first input port defined on one side of an interaction region of the optical switch element. The reflection occurs beyond an opposite side of the interaction region from the side on which the light signal is introduced. The reflection is detected at a second input port of the optical switch element on the same side of the interaction region as the side on which the light signals is introduced. The reflection is used to tune the optical switch element to a desired switch state by minimizing the reflection detected at the second input port. By minimizing the reflection detected at the second input port for a desired switch state, the strength of the optical signal through the wave guide channels intended to be used to propagate the light signal in the desired switch state is maximized. As a result, the switching extinction ratio for the optical switch element in the desired switch state is optimized. The system can be used to selectively tune a single optical switch element, or can be used to selectively tune multiple integrated optical switch elements that form an optical switch matrix on a common substrate, for example.
    • 用于调谐集成光开关元件的系统利用来自光信号的反射,该光信号被传播到限定在光开关元件的相互作用区域的一侧上的第一输入端口中。 反射发生在与从其引入光信号的一侧的相互作用区域的相反侧。 在光开关元件的与引入光信号的一侧的相互作用区域的相同侧的第二输入端处检测到反射。 反射用于通过最小化在第二输入端口处检测到的反射来将光学开关元件调谐到期望的开关状态。 通过将在第二输入端口检测到的反射最小化为期望的开关状态,通过旨在用于在期望的开关状态下传播光信号的波导通道的光信号的强度最大化。 结果,优化了所需开关状态下的光开关元件的切换消光比。 该系统可以用于选择性地调谐单个光学开关元件,或者可以用于例如选择性地调谐在公共基板上形成光学开关矩阵的多个集成光学开关元件。