Optical switch having switch mirror arrays controlled by scanning beams
    7.
    发明授权
    Optical switch having switch mirror arrays controlled by scanning beams 有权
    具有通过扫描光束控制的开关镜阵列的光开关

    公开(公告)号:US06643425B1

    公开(公告)日:2003-11-04

    申请号:US09642241

    申请日:2000-08-17

    IPC分类号: G02B635

    摘要: An optical switch having switch mirror arrays controlled by scanning beams that reduce the amount of electrical connections required and reduce the complexity for constructing large optical switches. Movement of the switch mirror arrays is controlled by one or more scanning beams. The optical switch includes one or more arrays of optical switch inputs and outputs and one or more arrays of movable mirrors to direct light beams from the optical switch inputs to the optical switch outputs. The optical switch also includes one or more control elements to control the movable mirrors based on scanning beams directed to the one or more control elements.

    摘要翻译: 具有通过扫描光束控制的开关镜阵列的光开关,其减少所需的电连接量并降低构建大型光开关的复杂度。 开关反射镜阵列的移动由一个或多个扫描光束控制。 光开关包括一个或多个光开关输入和输出阵列以及可移动反射镜的一个或多个阵列,以将光束从光开关输入引导到光开关输出。 光学开关还包括一个或多个控制元件,用于基于指向一个或多个控制元件的扫描光束来控制可移动反射镜。

    Narrowband analog to digital converter with suppressed second-order distortion
    10.
    发明授权
    Narrowband analog to digital converter with suppressed second-order distortion 失效
    具有抑制二阶失真的窄带模数转换器

    公开(公告)号:US06469649B1

    公开(公告)日:2002-10-22

    申请号:US09520912

    申请日:2000-03-08

    IPC分类号: H03M112

    CPC分类号: H03M1/1245 G02F7/00

    摘要: An apparatus for digitizing an analog electrical signal comprises a linearized sampler having an analog electrical input and a sampling input, a bandpass filter having a center frequency of at least half of the quantization rate of a quantizer in communication with the sampler, and the quantizer in communication with the bandpass filter. The linearized sampler in one embodiment is a linearized optical modulator with an optical input. The sampler frequency in another embodiment is chosen such that second-order distortion products generated in the sampler are separated in frequency from the sampled input band.

    摘要翻译: 一种用于数字化模拟电信号的装置包括具有模拟电输入和采样输入的线性化采样器,具有与采样器通信的量化器的量化速率的至少一半的中心频率的带通滤波器,以及量化器 与带通滤波器通信。 一个实施例中的线性化采样器是具有光输入的线性化光调制器。 选择另一实施例中的采样器频率使得在采样器中产生的二阶失真产物在频率上与采样的输入频带分离。