Optical implementation of perfect shuffle using Billet lens

This paper presents an optical system to implement perfect shuffle network us-ing Billet lens.Optical perfect shuffle network of high density and large capacity can be real-ized in this system with higher optical efficiency.     

用计算全息元件实现光学Perfect shuffle网络

本文介绍了一种实现光学perfect shuffie(PS)网络的方法,它是用计算机产生全息片(CGH)的方法制作的元件,该元件可以很简单地实现二维光学PS网络,实验结果表明,该方法是可行的,效果好,能推广到其它的变换网络。     

全混洗交换Omega互连网络的光学实现

本文提出了一种由左、右全混洗和空间光开关列阵组成的等效Omega网络;成功地设计了一种实现全混洗互连的低损耗,等程的光学组合棱镜.由两块光学组合棱镜和空间光开关列阵组合成的光学系统实现了全混洗交换光学互连网络,该光学互连网络已在实验中得到了证实.     

用二维光栅实现FPS互联网络

提出了一种应用二维光栅和简单的成像系统实现folded perfect shuffle(FPS)的新方法,该方法具有简单,易行的优点,实验证明,其效果良好.     

Optical implementation of butterfly interconnection and digital logic operation by grating

Optical butterfly interconnection and four primary optical perallel logic opera-tions are implemented by means of phase grating and liquid crystal light valve (LCLV),whichoffers a simple new scheme for implementing optical butterfly interconnections and digitalcomputations.     

Two-dimensional Compact Perfect Shuffle Optical Interconnection

Ｔｗｏ－ｄｉｍｅｎｓｉｏｎａｌＣｏｍｐａｃｔＰｅｒｆｅｃｔＳｈｕｆｆｌｅＯｐｔｉｃａｌＩｎｔｅｒｃｏｎｎｅｃｔｉｏｎ￥ＺＨＡＮＧＥｒｐｉｎｇ；ＹＵＣｈｏｎｇｘｉｕ；ＺＨＯＵＪｉｎｇ；ＸＵＤａｘｉｏｎｇ（ＢＯＸ１６３＃，ＤｅｐａｒｔｍｅｎｔｏｆＡｐｐｌ...     

Butterfly interconnection networks and their applications in Walsh-Hadamard transform-based information processing and optical computing

ＢｕｔｔｅｒｆｌｙｉｎｔｅｒｃｏｎｎｅｃｔｉｏｎｎｅｔｗｏｒｋｓａｎｄｔｈｅｉｒａｐｐｌｉｃａｔｉｏｎｓｉｎＷａｌｓｈ－Ｈａｄａｍａｒｄｔｒａｎｓｆｏｒｍ－ｂａｓｅｄｉｎｆｏｒｍａｔｉｏｎｐｒｏｃｅｓｓｉｎｇａｎｄｏｐｔｉｃａｌｃｏｍｐｕｔｉｎｇＨＥ...     

计算全息和零位补偿组合法检测非球面

本文提供了一种用计算全息和零位光学系统组合补偿检测非球面的方法,实验证明该方法检测非球面面形偏差时,精度达λ/10。     

A Novel Free-Space Comega Network and Its Optical Implementation

A novel free-space multistage interconnection network has been proposed. The network can be implemented using a 1×2 binary phase grating (BPG) which is placed in a 4f imaging system. All optical channels from BPG have been used to form a Comega network. The optomechanical package of the Comega network was made.     

分数傅里叶变换光学实现的基本单元

提出一些实现分数傅里叶变换的新型的基本光学单元。这些基本单元仅使用一个透镜和一个菲涅耳衍射，给光学设计增加一些新的可选基本类型，对于给定焦距的透镜，它能完成的分数傅里叶变换是Ｌｏｈｍａｎｎ给出的单透镜结构无法实现。     

Optical Learning Neural Network Using Photorefractive Waveguides

A model of an optical neural network with learning ability is proposed. We numerically evaluate the learning ability of the proposed network by using parameters determined by experiments. Adaptive connections between artificial neurons are implemented using photorefractive (PR) waveguides that can be optically modified by guided beams. The network consists of three layers and has bipolar weights within the limited range. The bipolar weight is encoded as the difference between optical power transmittances of signal beams in two channels of the PR waveguides. The adaptivity of the transmittance of PR waveguide is experimentally evaluated and is incorporated into the proposed network simulated in a computer. The proposed network is trained by a simplified local learning algorithm. Numerical results showed that the proposed three-layered network with six hidden neurons can solve the exclusive-or problem.     

64×64全交叉互连函数的光学实现

光互连全交叉网络在巨型计算机和光子交换网络系统等领域具有十分重要的潜在应用。本文在自行设计研制成功棱镜光栅和６５×６５大列阵Ｄａｍｍａｎｎ光栅的基础上，运用自由空间光学互连技术实现了６４×６４全交叉网络的互连函数。采用互连矩阵对输出图样进行了计算，结果与实验吻合。     

光互连技术在信号处理中的某些应用

叙述了近年来在天津大学研究及开发光互连网络的情况。这些研究围绕着解决信号传输中的延迟和通信带宽,开展的研究工作有：完成包括64个处理器的光电混合处理器阵列系统;giga—bit／s机群系统光互连链路;在链路中采用时分复用技术(TDM),实现了“虚拟并行传输”;在链路中设计了硬件路由功能,并组成光环网;在网络系统中实现波长路由,并建立了波长路由双环网,采用该技术可以避免路由延迟;在光互连网络中应用了MEMS光开关,实现了星型一环形二级结构;用同步光传输技术实现了多通道数据传输卡。     

光互连Omega网络与榕树网络拓扑等价的多样性

本文对互连网络拓扑等介的分析方法作了综合评述。采用图分析法研究了光互连Ｏｍｅｇａ网络与榕树网络拓扑等价的多样性，得到了Ｏｍｅｇａ网络与榕树网络具有拓扑等价性质的多套逻辑名结构。     

Design of a Two-layer Scalable Wavelength Routing Optical Interconnection Network

In this paper, a two-layer scalable wavelength routing optical interconnection network is presented. The top layer of the network is a multi-wavelength bi-directional optical bus which has high-bandwidth and low-latency; the sub-layer of the network is single-wavelength synchronous pipelined ring which has low communication latency and high-scalability. The way to implement the optical system of the network is put forward, and the synchronous pipelined optical interconnect ring is designed and implemented.     

计算全息法测量长焦透镜面形和焦距

为了同时对长焦透镜的面形和焦距进行高精度检测,提出在Zygo干涉仪的球面光路中加入一个二元衍射元件作为检测件的计算全息法。 首先对计算全息法检测长焦透镜的面形和焦距进行了理论推导,并给出焦距误差公式。在Zemax中使用在平面基底上制作的二元衍射元件对一个长焦透镜的面形和焦距进行了模拟检测,其中对该长焦透镜面形的干涉检测PV值为0.0034λ,对焦距的检测精度为-0.11%。最后详细分析了两类误差对检测结果的影响,其中光学元件的位置误差影响不超过0.1λ;二元衍射元件的制造误差影响约0.01λ,在具体制造过程中,其径向位置误差和台阶误差可分别在2 μm和5 nm之内。在综合考虑各项误差的情况下,该方法的检测精度仍然可控制在2λ/25之内。     

Design of a Two layer Scalable Wavelength Routing Optical Interconnection Network

１　Ｉｎｔｒｏｄｕｃｔｉｏｎ　　Ｈｉｇｈｐｅｒｆｏｒｍａｎｃｅｐａｒａｌｌｅｌｃｏｍｐｕｔｉｎｇｐｌａｔｆｏｒｍｍａｄｅｕｐｏｆｗｏｒｋｓｔａｔｉｏｎｓｏｒｐｅｒｓｏｎａｌｃｏｍｐｕｔｅｒｓｉｎｔｅｒｃｏｎｎｅｃｔｅｄｂｙｎｅｔｗｏｒｋｈａｓｂｅｃｏｍｅｔｈｅｍａｉｎｄｅｖｅｌｏｐｍｅｎｔｓｔｒｅａｍｏｆｐａｒａｌｌｅｌｃｏｍｐｕｔｉｎｇｔｅｃｈｎｏｌｏｇｉｅｓ［１,２］．Ｗｉｔｈｔｈｅｅｎｈａｎｃｅｍｅｎｔｏｆｎｏｄｅｃｏｍｐｕｔｅｒｐｒｏｃｅｓｓｉｎｇｃａｐａｂｉｌｉｔｉｅｓ,ｉｔｂｅｃｏｍ…     

Hartline侧抑制神经网络模型的光学实现

Hartline模型是从神经生理实验得出的普遍适用于神经系统对信息处理的一种方式的模型.本文提出了一种光电混合结构实现Hartline模型的方法:其中非相干光学卷积器实现所要求的卷积运算,用偏振编码的方法实现权重系数的编码,而减法运算仍由电子学完成.最后用二维图象边缘增强的光学实验验证了该方法的有效性.     

自由空间光学Comega多级互连网络特性研究

光学Ｃｏｍｅｇａ网络是一种新颖的易于光学实现的多级光互连网络。本文对该网络结构及特性进行了详细分析，和到了网络的互连函数，并给出了它与Ｓｔａｒａｎ，Ｃｒｏｓｓｏｖｅｒ，Ｏｍｅｇａ，Ｂａｎｙａｎ及基准等常见网络的拓扑等价证明。     

双极双向联想存储器的单通道光学实现

以附加神经元引入附加背景的方式获得将线性离散比极神经元的神经网络在单通道光学矢量-矩阵乘法器内实现的方法,给出了相应的光学系统的修正和非负光学模板的编码形式.以双极神经元的双向联想存储器为例进行了计算机和光电实验模拟.