电寻址铁电液晶空间光调制器及其驱动电源研制

介绍了６４×６４点阵铁电液晶空间光调制器（ＦＬＣＳＬＭ）及其驱动电路。该调制器对比度大于６０１，帧速大于２７帧／ｓ，在计算机控制下可以驱动ＦＬＣＳＬＭ显示动态图像。     

SSF－LCD的灰度与颜色要求

铁电液晶（ＦＬＣ）业已成为一个积极研究与开发的重要课题。ＦＬＣ给人们带来了制造一种不用有源矩阵驱动电路的高清晰度显示器的希望。然而在思考ＳＳＦ－ＬＣＤ的结构时，对于其灰度与彩色的要求则呼唤人们去寻求一些新的研究方案，特别是就灰度而言它是跟ＳＳＦ－ＬＣＤ的双稳态特点相矛盾的。本文则旨在描述采用不同的研究方案来获得所要求的灰度和颜色的各种新技术。     

铁电液晶的表面双稳的研究

本文研究了在不同的实验条件下铁电液晶的排列状态，实验中得到了表面双稳铁电液晶（ＳＳＦＬＣ）．分析了它的记忆机理，并测量了它的电光特性、响应时间及其锥角（ＣＯＮＥＡＮＧＬＥ）。最后我们讨论了双稳区的蜕变机理。     

ATM信令适配层规范

ＡＴＭ网络的信令系统是参照ＩＴＵ－ＴＱ．９３Ｂ建议来实现的，它通过ＡＡＬ５进行适配以进入ＡＴＭ网络，此时的ＡＡＬ称为信令ＡＡＬ（ＳＡＡＬ），它由业务特定协调功能（ＳＳＣＦ），业务特定面向连接协议（ＳＳＣＯＰ），公共部分汇聚子层（ＣＰＣＳ）和分段重装子层（ＳＡＲ）组成，本文着重介绍了ＳＳＣＦ、ＳＳＣＯＰ的原语、帧格式、状态转移图和有关的操作。     

—2—甲基丁氧基氟代联苯甲酸苯酯类液晶化合物的合成及其性能研究

合成了１０个（Ｓ）－２－甲基丁氧基氟代联苯甲酸苯酯类液晶化合物，测试了它们的物理性能，并就其性能与结构之间的关系进行了探讨。这些液晶化合物已在ＴＮ和ＦＬＣ实用配方中得到了较好的应用。     

(S)-2-甲基丁氧基氟代联苯甲酸苯酯类液晶化合物的合成及其性能研究

合成了１０个（Ｓ）—２—甲基丁氧基氟代联苯甲酸苯酯类液晶化合物，测试了它们的物理性能，并就其性能与结构之间的关系进行了探讨。这些液晶化合物已在ＴＮ和ＦＬＣ实用配方中得到了较好的应用。     

关于铁电液晶的若干问题——介绍一种新型平板型显示器

关于铁电液晶的若干问题——介绍一种新型平板型显示器深圳市先科企业集团严国荣问：什么是铁电液晶（ＦＬＣ）？答：铁电液晶（ＦｅｒｒｏｅｌｅｃｔｒｉｃＬｉｑｕｉｄＣｒｙｓｔａｌ：ＦＬＣ）是一种物质，它与以往被用于手表、文字处理器及个人电脑中的液晶不同，其最...     

HDSL ADSL FTTC HFC有线接入网技术（下）

介绍了高比特率数字用户环路（ＨＤＳＬ）的系统结构、原理及应用；不对称数字用户环路（ＡＤＳＬ）的技术特点及应用；光纤到路边（ＦＴＴＣ）的网络结构、应用及网络的升级；光纤─同轴混合网（ＨＦＣ）的网络结构以及上述接入网技术经济比，并讨论了ＨＦＣ技术与当今通信系统数字化的关系。     

一种新型结构的LB膜化学场效应晶体管的气敏特性研究

合成了新型的有机半导体ＬＢ膜气敏材料（ＣＯＴＤＭＡＰＰ），其ＬＢ多层膜拉制在场效应晶体管上，形成了具有ＬＢ－ＯＳＦＥＴ结构的化学场效应晶体管（ＣｈｅｒｎＦＥＴ），该器件置于ＮＯ２，ＮＨ３，ＣＯ和Ｈ２Ｓ等有害气体中，结果表明在ＮＯ２气氛中元件漏电流ＩＤＳ发生变化，并可检测到２ｐｐｍ的ＮＯ２．这种器件的气敏特性在于ＦＥＴ的电流放大作用及ＬＢ膜的有序性的影响．     

空间光调制器记录大规模开关的全息图

空间光调制器记录大规模开关的全息图在铁电液晶空间光调制器（ＦＬＣ－ＳＬＭ）上形成可重写全息图可把单－光学输入信号导至新型全息开关的多个输出口上。以前的全息／液晶开关已把计算机全息图组合到液晶显示器（ＬＣＤ）的像元上。每一像元能把光束引向一个输出口。具...     

SSFLC optical directional coupler switch with a short devicelength: a proposal

A novel vertical directional coupler waveguide switch composed of ferroelectric liquid crystal (FLC) is proposed and analyzed. The surface stabilized ferroelectric liquid crystal break (SSFLC) is used as an active separation layer between passive waveguides. To decrease the switching length, the waveguide switch is based on the power crossing the separation layer rather than coupling between waveguides. The calculated results relevant to the switch parameters such as the switching length, switching time, capacitance, and extinction ratio are presented. Because of the large birefringence of FLC, a very short switching length, less than 60 μm, is possible     

Elimination of Zig—zag Defects in Surface—stabilized Ferroelectric Liquid Crystal Cells

The elimination of zig-zag defects in polyimide-coated surface-stabilized ferroelectric liquied crystal(SSFLC)cells is carried out by appliying a low-frequency electric field.It has been achieved when the thickness of SSFLC cell is 3μm.The optical spectral transmittance measurement confirmed that there is no change of layer structure,and the memory capability was not improved.The different effects of low-frequency electric field applied on the different thickness FLC cells have been observed.and experimental results were presented.     

高频脉冲激励下SSFLC灰度调制效应的动态研究

通过引入由液晶盒多层结构及驱动电路所导致的阻抗分配效应,将表面稳定型铁电液晶(SSFLC)等效电路模型拓展到对其V字型光电效应的研究当中,在随机高频脉冲(τ<,P>=25 μs)激励下成功地实现了灰度级输出.模拟结果表明,当激励脉冲幅度较小时,输出光透射率随着激励脉冲幅度的提高线性增加,当激励脉冲幅度较大时则透射率趋于...     

实现铁电液晶显示器双稳的方法

本文简要介绍了铁电液晶显示器的基本工作原理及其特点，并着重从铁电液晶的材料和取向层以及分子层结构的角度阐述了获得铁电液晶显示器的双稳态的基本条件，并且列举了实现双稳态的的一些方法，最后给出了结论。     

铁电液晶的分子结构与性能评述:(Ⅰ)分子核对铁电液晶性能的影响

将铁电液晶分子的结构分为分子核、非手性尾和手性尾来讨论这些结构的变化对铁电液晶的相行为和铁电性能的影响，以期对铁电液晶的分子结构和其性能的关系有更深的认识。文章首先讨论分子核结构对铁电液晶性能的影响。     

Liquid crystal applications in photonics

We developed new optical switches based on nematic and ferroelectric liquid crystal (LC) cells for photonics applications. Certain new LC switches based on the effect of total internal reflection in nematic LC and deformed helix ferroelectric effect ferroelectric LC with very fast response time were developed. Fast bistable optical switches of the light polarization based on ferroelectric liquid crystal cells were proposed. The switches are characterized by 100 us switching time and 26 dB crosstalk at the wavelength of 632.8 nm and bistable, i.e., required zero power consumption in the switch state.High frequency hysteretic free electrically controlled 0-2π phase modulation of light has been proposed using a very short helix pitch (less than 400 nm) deformed helix ferroelectric liquid crystal. The electrically controlled 0-2π hysteretic free phase modulation was achieved at the driving voltage frequency up to 4 kHz and the voltage amplitude of 32 V. The application of fast V-shaped deformed helix ferroelectric ferroelectric LC (DHF-FLC) for new active-matrix liquid crystal display (LCD) and optical data processing devices is envisaged.Photoalignment technology can be very useful for the new generation of liquid crystal devices as well as in new photovoltaic, optoelectronic and photonic devices based on highly ordered thin organic layers. We have investigated the LC photoalignment in superthin tubes, which are basic elements of switchable photonic crystal/liquid crystal structures and obtained the order parameter comparable with usual homogeneous nematic LC cells. We studied LC alignment on silicon surfaces with submicrometer-sized straight and curved waveguide profiles. The liquid crystal cladding refractive index was then varied according to the applied voltage, and subsequently the microresonator resonance wavelengths were tuned. Based on our initial measurements, the free spectral range (FSR) wavelength shift within the range of 20 nm was obtained, which is comparable with a thermooptic effect. The new voltagecontrollable Si-based add drop filters are envisaged based on this principle.     

温度对铁电液晶电调谐滤波特性影响的研究

在改变外加电场实现铁电液晶电调谐滤波中,由于铁电液晶的螺距和自发极化强度对温度变化很敏感,从而为铁电液晶电调谐滤波器的应用和准确度的提高带来了困难。从铁电液晶的螺距和自发极化强度与温度的关系出发,讨论了温度对铁电液晶双折射的影响,给出了铁电液晶电调谐滤波器的透射率随温度变化的关系式,并进行了数值计算。结果表明,温度升高时,透射率和带宽增大,透射峰波长向短波长方向移动,温度变化对铁电液晶电调滤波特性的影响远小于电场变化的影响。     

含有全氟辛基的小分子液晶与聚合物液晶混合Langmuir及Langmuir-Blodgett膜

研究了含有全氟辛基的小分子液晶与聚合物液晶混合Langmuir膜的表面压-面积等温线，结果表明在混合膜中分子间相互作用依赖于聚合物液晶的结构，这些相互作用导致在LB膜中聚合物液晶固有层结构的消失并且影响小分子液晶的层结构。     

我国铁电液晶材料研究进展

自从Clark与Lagerwall提出表面双稳铁电液晶显示原理后，铁电液晶材料在显示领域中的应用一直是国内外研究的热点课题，总结了国内外近年来铁电液晶材料的合成与研究工作和目前在显示领域应用中遇到的问题，并阐述了在其他领域的应用前景。     

Ferroelectric Liquid Crystal Gates and Optical Computing

The surface statbilized ferroelectric liquid crystal device configuration and ferroelectric liquid crystal gates are described.The liquid crystal electrooptical gates have numerous applications,including optical computation,optodigital circuits,and optical communication networks.