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81.发明授权Apparatus for fourier analyzing, normalizing and determining time-phase coincidence between signals 失效用于对信号进行分析，归一化和确定时间相位重合的装置
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82.发明授权Device for correlating by pairs the various record traces of the same seismic shot 失效通过成对关联相同地震拍摄的各种记录轨迹的装置
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83.发明申请公开(公告)号：US20190072833A1
公开(公告)日：2019-03-07
申请号：US15830747
申请日：2017-12-04
发明人： Hani NEJADRIAHI , Volker J. SORGER
CPC分类号： G02F1/225 , G02F1/0147 , G02F2001/212 , G02F2001/215 , G06E3/003
摘要： The present invention provides optical computing by means of fast Fourier transform Integration on Silicon On Insulator chip technology with implementation in the analog and temporal domain. This is done by cascading (N−2) stages of delayed interferometers (couplers and phase shifters) where a parallel set of N time samples are taken and using the delay lines and phase of the optical components (constructive/deconstructive interference) the DFT is computed. The Optical Fast Fourier Transform (OFFT) design was built on passive components (2×2 couplers: cascaded Mach Zehnder Interferometer) used for addition and subtraction through optical interference, waveguides with short path differences are used for phase shifting and waveguides with long path differences are used for signal delay based on the needed number of outputs. Since the OFFT is a system of imbalanced interferometers, there are additional bends designed to compensate for the difference in power ratios of the arms.
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公开(公告)号：US20180217629A1
公开(公告)日：2018-08-02
申请号：US15938994
申请日：2018-03-28
CPC分类号： G06E3/003 , G06E3/005 , G06F17/141
摘要： A method of performing a complex Fourier transform of an input function including amplitude and phase information, including decomposing the input function into a plurality of sub-functions, wherein the Fourier transform of each sub-function includes an amplitude function and a phase function in which the phase is constrained to a plurality of possible phase values. The phase function of the Fourier transform of each sub-function is determined with an optical system that measures the amplitude function of an optical Fourier transform of the sub-function and changes in the amplitude function of the optical Fourier transform caused by applying a perturbation function to the sub-function. The determined phase functions and the measured amplitude functions are combined for each of the sub-functions to form the complex Fourier transform of the input function.
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公开(公告)号：US09170599B2
公开(公告)日：2015-10-27
申请号：US13290982
申请日：2011-11-07
摘要： A method utilizes an optical image processing system. The method includes calculating a product of (i) a measured magnitude of a Fourier transform of a complex transmission function of an object or optical image and (ii) an estimated phase term of the Fourier transform of the complex transmission function. The method further includes calculating an inverse Fourier transform of the product, wherein the inverse Fourier transform is a spatial function. The method further includes calculating an estimated complex transmission function by applying at least one constraint to the inverse Fourier transform.
摘要翻译： 一种方法利用光学图像处理系统。 该方法包括：计算（i）物体或光学图像的复数传播函数的傅里叶变换的测量幅度和（ii）复数传递函数的傅立叶变换的估计相位项的乘积。 该方法还包括计算乘积的逆傅里叶变换，其中逆傅立叶变换是空间函数。 该方法还包括通过对傅里叶逆变换应用至少一个约束来计算估计的复传输函数。
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86.发明申请METHOD AND APPARATUS FOR ALL-OPTICAL DISCRETE FOURIER TRANSFORM INCLUDING ALL-OPTICAL OFDM DEMULTIPLEXING 审中-公开全光分光光栅变换包括全光OFDM解复用的方法与装置公开(公告)号：US20120224867A1
公开(公告)日：2012-09-06
申请号：US13040784
申请日：2011-03-04
申请人： Inuk Kang
发明人： Inuk Kang
IPC分类号： H04B10/06
CPC分类号： H04B10/548 , G06E3/003 , H04J14/02 , H04L27/2697
摘要： Various exemplary embodiments relate to an optical discrete Fourier transform device including: a 1×N splitter; N optical delay lines each with an optical phase shifter, wherein the N optical delay lines are coupled to the 1×N MMI device; and an N×N MMI device coupled to the N optical delay lines, wherein the N×N MMI device produces N optical outputs.
摘要翻译： 各种示例性实施例涉及一种光学离散付里叶变换装置，包括：1×N分路器; N个光学延迟线各自具有光学移相器，其中N个光学延迟线耦合到1×N MMI器件; 以及耦合到N个光延迟线的N×N MMI器件，其中N×N MMI器件产生N个光输出。
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公开(公告)号：US20120033966A1
公开(公告)日：2012-02-09
申请号：US13255808
申请日：2010-03-10
IPC分类号： H04B17/00
摘要： An optical system includes an optical integrator, a readout mechanism, and an optical thresholder. The optical integrator is configured to perform temporal integration of an optical input signal having a first wavelength received at an input. The readout mechanism is coupled to the optical integrator and provides optical signals having a second wavelength to the optical integrator for measuring a state of the optical integrator. The optical thresholder is coupled to an output of the optical integrator and is configured to receive a signal representing a temporal integration of the optical input signal from the optical integrator and produce an optical signal identifying if an amplitude of the signal representing the temporal integration of the optical input signal is above or below a threshold value.
摘要翻译： 光学系统包括光学积分器，读出机构和光学阈值器。 光学积分器被配置为执行在输入处接收的具有第一波长的光输入信号的时间积分。 读出机构耦合到光学积分器，并向光学积分器提供具有第二波长的光学信号，以测量光学积分器的状态。 光学阈值器被耦合到光学积分器的输出，并且被配置为接收表示来自光学积分器的光学输入信号的时间积分的信号，并且产生一个光学信号，该光学信号标识表示时间积分的信号的幅度 光输入信号高于或低于阈值。
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88.发明授权Apparatus and method for providing true time delay in optical signals using a Fourier cell 有权使用傅里叶单元在光信号中提供真实时间延迟的装置和方法公开(公告)号：US07911671B2
公开(公告)日：2011-03-22
申请号：US11801015
申请日：2007-05-08
申请人： David J. Rabb
发明人： David J. Rabb
IPC分类号： G02B26/08
CPC分类号： G06E3/003 , G02B17/004 , G02B17/023 , Y10S359/90
摘要： An true time delay in optical signals using a Fourier cell is provided. One embodiment includes: an input array for inputting an array of light beams; at least a portion of a lens; a plurality of micromirrors located at a distance away from the lens that is approximately equal to the focal length of the lens; one or more mirrors located at a distance away from the lens that is approximately equal to the focal length of the lens; and one or more delay blocks, at least a portion of which are located at a distance away from the lens that is approximately equal to the focal length of the lens. The micromirrors may include a plurality of individually controllable pixels for directing one or more light beams in the array of light beams through the lens and onto either a mirror or a delay block.
摘要翻译： 提供了使用傅里叶单元的光信号中的真实时间延迟。 一个实施例包括：用于输入光束阵列的输入阵列; 透镜的至少一部分; 多个位于远离透镜一定距离的微镜，其大致等于透镜的焦距; 位于远离透镜一定距离的一个或多个反射镜，其近似等于透镜的焦距; 以及一个或多个延迟块，其至少一部分位于远离透镜的距离处，其距离近似等于透镜的焦距。 微镜可以包括多个单独可控的像素，用于将光束阵列中的一个或多个光束引导通过透镜并且到达反射镜或延迟块。
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公开(公告)号：US07643952B2
公开(公告)日：2010-01-05
申请号：US11396935
申请日：2006-04-03
摘要： A method processes an optical image. The method includes providing a measured magnitude of the Fourier transform of a two-dimensional complex transmission function. The method further includes providing an estimated phase term of the Fourier transform of the two-dimensional complex transmission function. The method further includes multiplying the measured magnitude and the estimated phase term to generate an estimated Fourier transform of the two-dimensional complex transmission function. The method further includes calculating an inverse Fourier transform of the estimated Fourier transform, wherein the inverse Fourier transform is a spatial function. The method further includes calculating an estimated two-dimensional complex transmission function by applying at least one constraint to the inverse Fourier transform.
摘要翻译： 一种处理光学图像的方法。 该方法包括提供二维复数传输函数的傅立叶变换的测量幅度。 该方法还包括提供二维复数传输函数的傅立叶变换的估计相位项。 该方法还包括将测量的幅度和估计的相位项相乘以产生二维复数传输函数的估计傅里叶变换。 该方法还包括计算傅立叶逆变换的傅立叶逆变换，其中逆傅里叶变换是空间函数。 该方法还包括通过对傅里叶逆变换应用至少一个约束来计算估计的二维复传输函数。
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90.发明授权Programmable optical processing device employing stacked light modulator elements in fractional Fourier planes 失效在分数傅里叶平面中采用堆叠光调制器元件的可编程光学处理器件公开(公告)号：US07609447B2
公开(公告)日：2009-10-27
申请号：US11929259
申请日：2007-10-30
申请人： Lester F. Ludwig
发明人： Lester F. Ludwig
IPC分类号： G02B27/46
CPC分类号： G06E1/00 , G02B27/46 , G06E3/00 , G06E3/003 , Y10S359/90
摘要： A monolithic or hybrid integrated optical processor or optical processing system having a plurality of light modulating array elements, each controlled by respective control signals, and arranged so that each light modulating array element lies in a different fractional Fourier transform plane. In various embodiments, at least a portion of the resulting system is implemented in a stack of element materials. In one embodiment, a segment of graded index material lies between consecutive light modulating array elements. Other features include obtaining images from an electronically-controllable image source, using an image sensor to change the processed image into an electrical output, and using at least one of the light modulating array element to introduce a phase shift.
摘要翻译： 一种单片或混合集成光学处理器或光学处理系统，其具有多个光调制阵列元件，每个光调制阵列元件由各个控制信号控制，并且被布置为使得每个光调制阵列元件位于不同的分数傅立叶变换平面中。 在各种实施例中，所得到的系统的至少一部分被实现为一堆元件材料。 在一个实施例中，渐变索引材料的一段位于连续的光调制阵列元件之间。 其他特征包括从电子可控图像源获得图像，使用图像传感器将经处理的图像改变为电输出，并且使用光调制阵列元件中的至少一个来引入相移。
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