光互联网的关键器件

光互联网是指IP over WDM网，是未来网络的发展方向。本着重介绍了光互联网中的关键器件及其发展现状，包括光放大器、光转发器、光分插复用器、光交叉连接器、光开关、交换路由器。     

全光通信技术讲座：第讲 光交换技术

本文是全光通信技术讲座的最后一讲，主要介绍光交换的基本概念、光交换器件、各种光交换、光分插复用、ＡＴＭ光交换及光互连技术。     

辅助光注入下半导体光放大器的快慢光性能

随着全光网络的快速发展,快慢光技术受到了广泛关注。为了研究半导体光放大器(SOA)的快慢光效应,文章构建了辅助光注入半导体光放大器的理论模型。比较了辅助光注入SOA前后,直流电流、调制电流、调制频率、相移以及增益系数等参数对相位延时量的影响。仿真结果表明：辅助光的注入使输出信号光由慢光变为快光,辅助光功率越强,效果越明显。同时,注入辅助光信号后,直流电流越大,相位延时量越大;调制电流、调制频率、相移及增益系数越大,相位延时量越小。     

光联网中的光开关器件

光联网是当前光网络的发展趋势,光联网的实现主要依赖于光开关、光滤波器、光放大器等关键光电子器件和密集波分复用等系统技术的进展。光开关是实现光交换的关键元器件,被广泛应用于光层的路由选择、波长选择、光交叉互连以及自愈保护等功能,主要应用包括:     

光传送网中的关键光器件

光器件是光传送网的基础单元之一，本主要综述光传送网中的关键光器件：光源与光探测器、光波分复用/解复用器、光放大器、色度色散与偏振模补偿器及光开关等。比较了各种光器件的主要技术方案，特别针对的是已实用化的技术方案。最后讨论了光器件的尺寸小型化、微型化以及多功能集成等发展趋势，介绍了光器件的集成方式如：传统分立光器件的集成，平面光波导集成，以及混合集成等。     

第一章 光波分复用系统的基本原理

介绍光波分复用系统的基本原理。分别介绍光波分复用器、掺饵光纤放大器;光波分复用技术的主要优点、协调要点;光通路的波长分配、目标传输距离和光缆传输衰减、波长转换器、光监控通路及每信道最小发送功率等光波分复用系统五大主要参数的选择考虑。     

OCDMA技术的研究现状及发展

OCDMA技术是新一代的全光技术,可以广泛用于光信道多路复用、光网络多址接入、光码标记交换核心网、光信号安全传输、光纤传感以及光栽无线系统等.概述了光码分多址(OCDMA)技术的研究现状、主要关键技术,并展望其发展趋势和应用前景.     

光孤子通信理论与基础技术

光孤子通信理论与基础技术杨祥林于虹温扬敬毛庆和陈明华（东南大学２１００１８）主题词：光孤子源；光孤子放大；光孤子传输项目批准号：６９２３７０２１１．光孤子的传输控制理论，包括光孤子的传输演化、能量补偿、噪声控制及高速长距离光孤子通信系统的设计理论和方...     

光纤通信用的集成光学器件

光纤通信用的集成光学器件是未来光通信网的核心器件。发达国家已研制开发了各种集成光学器件,如光调制器、光开关、光耦合器、光隔离器、光衰减器、波形尺寸转换器、分光器、滤波器等,有的产品已批量化和商品化,市场十分广阔。     

光网络的发展、演进和面临的挑战

文章从发展光网络的驱动力和目的出发,重点介绍了光交叉连接设备的分类和实现技术、全光交叉连接器的核心硬件技术的发展、向智能光网络的演进、光网络的管理、IP层与光层的融合及网络的演进结构、多协议标记交换应用于光层后的特点和适配需要等。     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.