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公开(公告)号：US5724162A
公开(公告)日：1998-03-03
申请号：US562919
申请日：1995-11-27
申请人： Joseph P. Garcia , Lisa Koenigsberg
发明人： Joseph P. Garcia , Lisa Koenigsberg
CPC分类号： G02B26/0808
摘要： An optical correlator is disclosed that compares signals of interest agai selected reference signals stored in holograms both of which are imaged onto a spatial light modulator comprising electron trapping material. The cooperative action of the light from the hologram and the light from a delayed line causes the spatial light modulator to produce signals that are proportional to the correspondence between the signals of interest and the reference signals.
摘要翻译： 公开了一种光学相关器，其将感兴趣的信号与存储在全息图中的所选参考信号进行比较，两者都被成像到包括电子捕获材料的空间光调制器上。 来自全息图的光和来自延迟线的光的协同作用导致空间光调制器产生与感兴趣的信号和参考信号之间的对应关系成正比的信号。
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2.发明授权Using the Talbot Effect for lensless imaging of periodic structures in a holographic memory system 有权使用Talbot效应在全息存储系统中的周期性结构的无透镜成像
公开(公告)号：US6122081A
公开(公告)日：2000-09-19
申请号：US378129
申请日：1999-08-18
CPC分类号： G02B27/4238 , G11B7/0065 , G11C13/042
摘要： A holographic memory system which utilizes the Talbot Effect for the lensless, near-field propagation of repeating image planes of periodic structures. Periodic phase structures at one plane in a holographic memory system are mapped to the input amplitude data plane in the holographic memory system. In a preferred embodiment, coherent light is passed through a lenslet array and propagated via the Talbot Effect to self-image coincident on a spatial light modulator that provides the holographic memory system with input data. The lenslet array is located relative to the spatial light modulator such that the desirable phase image structure is self-imaged in its Fresnel region onto the input amplitude data structure.
摘要翻译： 全息存储系统，其利用Talbot效应用于周期性结构的重复图像平面的无透镜，近场传播。 在全息存储器系统中的一个平面处的周期相位结构被映射到全息存储器系统中的输入幅度数据平面。 在优选实施例中，相干光通过小透镜阵列，并且经由Talbot效应传播到在为全息存储器系统提供输入数据的空间光调制器上重合的自身图像。 小透镜阵列相对于空间光调制器定位，使得期望的相位图像结构在其菲涅尔区域中自成像到输入幅度数据结构上。
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公开(公告)号：US5844700A
公开(公告)日：1998-12-01
申请号：US685513
申请日：1996-07-24
CPC分类号： G11B7/0025 , G03H1/0248 , G03H1/26 , G11B7/0065 , G03H1/265
摘要： Partially overlapping holograms are stored in a cylindrical volume holographic storage medium capable of rotation about and translation along its longitudinal axis. The reference and signal beams are mutually perpendicular, and each is perpendicular to the longitudinal axis. An index-matched housing encloses the medium laterally. An optional helically-varying optical axis (c-axis) orientation allows recording at constant angular intervals over a full revolution. Signals from stored pages are used to dynamically adjust the positioning of the medium relative to the light beams as the medium continuously spins at high velocity, and to control the access of the signal beam to the readout camera.
摘要翻译： 部分重叠的全息图存储在能够围绕其纵向轴线旋转和平移的圆柱体积全息存储介质中。 参考信号光束和信号光束相互垂直，并且每个垂直于纵向轴线。 索引匹配的外壳横向包围介质。 可选择的螺旋变化光轴（c轴）方向允许以一整圈的恒定角度间隔进行记录。 来自存储页面的信号用于在介质以高速连续旋转时动态地调节介质相对于光束的定位，并且控制信号光束到读出照相机的存取。
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公开(公告)号：US07620275B2
公开(公告)日：2009-11-17
申请号：US12035636
申请日：2008-02-22
CPC分类号： G02F1/01708 , B82Y20/00 , G02F2001/0144 , G02F2001/212 , G02F2201/063 , G02F2203/07
摘要： Provided is an apparatus and method for use thereof. The apparatus, in one embodiment, includes a 1×2 coupler in communication with a waveguide. The 1×2 coupler, in this embodiment, is configured to separate an input finite bandwidth optical signal provided from the optical waveguide into two similar optical signals. Input ends of first and second waveguide arms, in one embodiment, are in communication with the 1×2 coupler and configured to receive ones of the input optical signals. An inherent birefringence of each of the first and second waveguide arms may be substantially similar. Moreover, the first and second waveguide arms have different physical path lengths that differ by an amount (ΔL). Additionally, a 2×2 coupler may be in optical communication with an output end of the first and second waveguide arms and configured to provide an output TE polarization and an output TM polarization.
摘要翻译： 提供一种其使用的装置和方法。 在一个实施例中，该装置包括与波导连通的1x2耦合器。 在本实施例中，1x2耦合器被配置为将从光波导提供的输入有限带宽光信号分离成两个相似的光信号。 在一个实施例中，第一和第二波导臂的输入端与1x2耦合器通信并被配置为接收输入光信号中的一个。 第一和第二波导臂中的每一个的固有双折射可以是基本相似的。 此外，第一和第二波导臂具有不同的物理路径长度（DeltaL）。 另外，2x2耦合器可以与第一和第二波导臂的输出端光学通信并且被配置为提供输出TE偏振和输出TM偏振。
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5.发明授权Incoherent/coherent double angularly multiplexed volume holographic optical elements 失效不相干/相干双角度复用体积全息光学元件
公开(公告)号：US5661577A
公开(公告)日：1997-08-26
申请号：US441333
申请日：1995-05-15
CPC分类号： G02B5/32 , G03H1/28 , G11B7/0065 , G11B7/28 , G11C13/042 , H04Q11/0001 , G03H1/0005 , G03H1/265
摘要： Novel multiplexed volume holographic optical elements for the development of highly multiplexed photonic interconnection and holographic memory systems with maximum optical throughput efficiency and minimum crosstalk, based on parallel incoherent/coherent double angularly multiplexed volume holographic recording and readout principles, are disclosed. These principles further provide for arbitrarily weighted and independent interconnections, which are of potential importance in the development of densely interconnected photonic implementations of neural networks, photonic interconnection networks for telecommunications switching and digital computing applications, optical information processors, and optical memories. Utilization of the principles that are key features of this holographic element allows for the single step transfer of all or part of the information stored in a three-dimensional holographic storage device to a second such device in a single exposure step. Variants of the multiplexed volume holographic optical element include bulk holographic recording media as well as stratified volume holographic optical elements, comprising in either case both holographic (optical) modulation patterns and computer-generated holograms. Further variants of the multiplexed volume holographic optical element incorporate a subhologram structure within the volume holographic optical element that allows for high efficiency recording in certain real time photorefractive media.
摘要翻译： 公开了基于平行非相干/相干双角度复用体积全息记录和读出原理的用于开发具有最大光通量效率和最小串扰的高度复用的光子互连和全息存储系统的新型多路复用体全息光学元件。 这些原理进一步提供了任意加权和独立的互连，这对于开发神经网络的密集互连光子实现，用于电信交换和数字计算应用的光互连网络，光信息处理器和光存储器是非常重要的。 作为该全息元件的关键特征的原理的利用允许在一个曝光步骤中将存储在三维全息存储装置中的全部或部分信息的单步传送到第二个这样的装置。 多路复用体积全息光学元件的变型包括体全息记录介质以及分层体积全息光学元件，在任一种情况下都包括全息（光）调制图案和计算机产生的全息图。 多路复用体积全息光学元件的进一步变型在体积全息光学元件内结合了一个亚光谱结构，允许在某些实时光折射介质中进行高效率的记录。
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