Fast all-optical switches and attenuators
    1.
    发明申请
    Fast all-optical switches and attenuators 审中-公开
    快速全光开关和衰减器

    公开(公告)号:US20050174639A1

    公开(公告)日:2005-08-11

    申请号:US10470177

    申请日:2002-01-22

    摘要: A polarizing beam-splitter apparatus, comprising: an input port through which an input beam of lights is provided; a first polarizing beam splitter that receives the input beam and splits the beam into at least a first and second beam, said first beam having substantially a first desired polarization state and said second beam having a second polarization state orthogonal to said first polarization state but possibly admixed with the first polarization state; and an optical system that receives the second beam and provides a third beam having the second polarization state and a smaller admixture of the second polarization state than the second beam.

    摘要翻译: 一种偏振分束器装置,包括:输入端口,通过所述输入端口提供输入光束; 第一偏振分束器,其接收所述输入光束并且将所述光束分解成至少第一和第二光束,所述第一光束具有基本上第一期望的偏振状态,并且所述第二光束具有与所述第一偏振状态正交的第二偏振态,但是可能 与第一极化状态混合; 以及光学系统,其接收第二光束并提供具有第二偏振状态的第三光束和比第二光束更小的第二偏振态的混合物。

    Method and device for polarization-based all-optical switching
    2.
    发明授权
    Method and device for polarization-based all-optical switching 失效
    用于基于偏振的全光开关的方法和装置

    公开(公告)号:US06807329B2

    公开(公告)日:2004-10-19

    申请号:US09907252

    申请日:2001-07-17

    IPC分类号: G02B626

    摘要: This application describes an optical switching method for selectively directing an input beam to at least one of two output channels. The input beam impinges on a polarizing beam splitting surface, splitting the input beam into two beam components of different polarizations propagating along different optical paths. These beam components then pass through a controllable polarization rotating medium which selectively affects the polarization of each of the beam components. The beam components are then directed back onto the polarizing beam splitting surface again, producing at least one output beam which propagates toward at least one selected output channel, depending on the state of the medium. The polarizing beam splitting surface is fabricated on a block of the controllable polarization rotating medium, and the input beam also passes through the medium before being split into two beam components by the polarizing beam splitting surface.

    摘要翻译: 本申请描述了一种用于选择性地将输入光束引导到两个输出通道中的至少一个的光学切换方法。 输入光束照射在偏振分束表面上,将输入光束分成沿不同光路传播的不同极化的两个光束分量。 这些光束分量然后穿过可选择地影响每个光束分量的偏振的可控偏振旋转介质。 光束分量然后再次被引导回到偏振光束分离表面上,根据介质的状态产生至少一个向至少一个所选输出通道传播的输出光束。 偏振光束分离表面制造在可控偏振旋转介质的块上,并且输入光束也在通过偏振光束分离表面分裂成两个光束分量之前也通过介质。

    Optical processing
    3.
    发明授权
    Optical processing 失效
    光学加工

    公开(公告)号:US07012749B1

    公开(公告)日:2006-03-14

    申请号:US09979180

    申请日:2000-05-19

    IPC分类号: G02B27/46

    摘要: A method of performing a DFT (discrete Fourier transform) or a DFT derived transform on data, comprising: providing spatially modulated light having spatial coherence, said spatially modulated light representing the data to be transformed; Fourier transforming said spatially modulated light, using an at least one optical element; and compensating for at least one of a scaling effect and a dispersion effect of said at least one optical element, using an at least one dispersive optical element.

    摘要翻译: 对数据执行DFT(离散傅立叶变换)或DFT导出变换的方法,包括:提供具有空间相干性的空间调制光,所述空间调制光表示要变换的数据; 使用至少一个光学元件对所述空间调制光进行傅立叶变换; 以及使用至少一个色散光学元件来补偿所述至少一个光学元件的缩放效果和色散效应中的至少一个。

    Optical processing
    4.
    发明申请
    Optical processing 审中-公开
    光学加工

    公开(公告)号:US20050149598A1

    公开(公告)日:2005-07-07

    申请号:US11063387

    申请日:2005-02-22

    摘要: A method of performing a DFT (discrete Fourier transform) or a DFT derived transform on data, comprising: providing spatially modulated light having spatial coherence, said spatially modulated light representing the data to be transformed; Fourier transforming said spatially modulated light, using an at least one optical element; and compensating for at least one of a scaling effect and a dispersion effect of said at least one optical element, using an at least one dispersive optical element.

    摘要翻译: 对数据执行DFT(离散傅立叶变换)或DFT导出变换的方法,包括:提供具有空间相干性的空间调制光,所述空间调制光表示要变换的数据; 使用至少一个光学元件对所述空间调制光进行傅立叶变换; 以及使用至少一个色散光学元件来补偿所述至少一个光学元件的缩放效果和色散效应中的至少一个。

    Imaging system with improved image quality and associated methods
    8.
    发明申请
    Imaging system with improved image quality and associated methods 审中-公开
    具有改善图像质量和相关方法的成像系统

    公开(公告)号:US20090122150A1

    公开(公告)日:2009-05-14

    申请号:US12213474

    申请日:2008-06-19

    IPC分类号: G03B13/00 G02B27/00 H04N5/228

    摘要: An imaging system includes an optical system for projecting an object onto a detector, and a phase element between an entrance pupil of the optical system and the detector, the phase element adapted to provide a more uniform modulation transfer function over a range of focus than the optical system alone, wherein an effective focal length of light output from the phase element is a function of an angular component on which the light is incident on the phase element.

    摘要翻译: 成像系统包括用于将物体投影到检测器上的光学系统,以及在光学系统的入射光瞳和检测器之间的相位元件,相位元件适于在焦点范围上提供比均匀的调制传递函数 光学系统,其中从相位元件输出的光的有效焦距是光入射在相位元件上的角分量的函数。

    Phase extraction in optical processing
    10.
    发明授权
    Phase extraction in optical processing 失效
    光学加工中的相位提取

    公开(公告)号:US07515753B2

    公开(公告)日:2009-04-07

    申请号:US11470800

    申请日:2006-09-07

    IPC分类号: G06K9/66

    CPC分类号: G02B27/46 G06K9/58

    摘要: A method of optical data processing, comprising: providing a first data set to be optically transformed using a transform; combining a reference data set with said first data set to generate coherent light, encoding a combined data set; optically and coherently transforming said light that encodes the combined data set, into coherent light that encodes a transformed combined data set; obtaining a transformed reference data set by determining the effect said optical transform has on light encoding said reference data set; and extracting a second data set that represents a transform of said first data set, from an intensity portion of light encoding said transformed combined data set, using said transformed reference data set to extract a phase of at least one element of said second data set.

    摘要翻译: 一种光学数据处理方法,包括:提供使用变换进行光学变换的第一数据组; 将参考数据组与所述第一数据组组合以产生相干光,对组合数据集进行编码; 将所述编码组合数据集的光光学地和相干地变换成对变换的组合数据集进行编码的相干光; 通过确定所述光学变换对所述参考数据集的光编码具有的影响来获得变换的参考数据集; 以及使用所述变换的参考数据集从所述经变换的组合数据集的光的强度部分中提取表示所述第一数据集的变换的第二数据集,以提取所述第二数据集的至少一个元素的相位。