Travelling Solitary Wave Solutions for Generalized Time-delayed Burgers-Fisher Equation

In this paper, travelling wave solutions for the generalized time-delayed Burgers-Fisher equation are studied. By using the first-integral method, which is based on the ring theory of commutative algebra, we obtain a class of travelling solitary wavesolutions for the generalized time-delayed Burgers-Fisher equation.A minor error in the previous article is clarified.     

Travelling solitary wave solutions for the generalized Burgers--Huxley equation with nonlinear terms of any order

In this paper, the travelling wave solutions for the generalized Burgers--Huxley equation with nonlinear terms of any order are studied. By using the first integral method, which is based on the divisor theorem, some exact explicit travelling solitary wave solutions for the above equation are obtained. As a result, some minor errors and some known results in the previousl literature are clarified and improved.     

Intensity Correlation Function of a Single-Mode Laser Driven by Two Colored Noises with Colored Cross-Correlation

By using the linear approximation method, the intensity correlation function and the intensity correlation time are calculated in a gain-noise model of a single-mode laser driven by colored cross-correlated pump noise and quantum noise, each of which is colored. We detect that, when the cross-correlation between both noises is negative, the behavior of the intensity correlation function C(t) versus time t, in addition to decreasing monotonously, also exhibits several other cases, such as one maximum, one minimum, and two extrema (one maximum and one minimum), i.e., some parameters of the noises can greatly change the dependence of the intensity correlation function upon time. Moreover, we find that there is a minimum Tmin in the curve of the intensity correlation time versus the pump noise intensity, and the depth and position of Train strongly depend on the quantum noise self-correlation time T2 and cross-correlation time T3.     

纳米Si-SiOx和Si-SiNx复合薄膜的低温制备及其发光特性

用等离子体增强化学气相沉积法在低温（低于50℃）衬底上沉积Si-SiOx和Si-SiNx复合薄膜,可得到平均颗粒尺寸小至3nm的高密度（最高可达4.0×1012cm-2）纳米硅复合薄膜.500℃快速退火后,这种复 合薄膜显现出优异的可见光全波段光致发光特性.通过比较相同条件下所制备的纳米Si-SiOx和Si-SiNx复合薄膜的光致发光效率,发现纳米Si-SiNx具有更为优异 的光致发光效率,这一点在可见光短波区表现得尤为显著. 关键词： 等离子体增强化学气相沉积 冷衬底 硅纳米颗粒 光致发光     

信号直接调制下色关联噪声驱动的单模激光的随机共振

应用线性化近似方法，计算了信号直接调制下由具有色关联的色泵噪声和色量子噪声驱动的单模激光增益模型的输出功率谱和信噪比，发现在信噪比R随泵噪声自关联时间τ1的变化曲线中同时存在共振和抑制现象，当增大输入信号频率到某一临界值Ω0时，共振和抑制同时消失，曲线成为单调. 进一步还发现R随衰减系数γ的变化曲线也会出现共振的新现象.  关键词： 线性化近似 信号直接调制 随机共振 抑制     

Dynamic Polarization-Mode-Dispersion Compensation for 160 Gbit/s OTDM Systems

We report on 160 Gbit/s RZ （return-to-zero） code transmission experiments including a dynamic polarization mode dispersion （PMD） compensation. The 2.5-ps first-order and 15-ps2 second-order PMD are compensated for. The PMD compensation time is within 24 ms. The experimental results show that a significant improvement of system performance can be achieved by auto-correlative curves.     

偏置信号调制下色关联噪声驱动的单模激光的光强相对涨落

采用线性化近似，计算了由具有色关联的受偏置信号调制的色泵噪声和色量子噪声驱动 的单模激光增益模型的光强相对涨落，发现相对涨落随噪声强度的变化曲线中存在极小值，分析了偏置信号的强度、周期信号频率、噪声间的互关联强度和互关联时间对曲线的影响； 对单模激光增益模型在偏置信号调制和直接信号调制两种方式下的输出光强相对涨落进行了比较，发现光强涨落与偏置信号的强度密切相关. 关键词： 偏置信号调制 光强相对涨落 线性化近似     

Multiplexed fiber optic sensors matrix demodulated by a white light interferometric Mach–Zehnder interrogator

A multiplexed white light interferometric fiber optic sensors matrix system was designed and demonstrated. In this system, a Mach–Zehnder optical path interrogating technique is used to demodulate each sensor of the sensors matrix. The sensors matrix consists of M×N sensing elements linked by a 1×M star coupler. The multiplexing capacity of the sensing scheme has been analyzed and an experimental result with a 2×2 sensors matrix was presented.     

SiCp/ Al复合材料与化学镀镍层结合机理研究

根据结构化学理论，用SEM, EDAX和XPS等测试手段研究了镀层和碳化硅颗粒增强铝基复合材料(SiC_p/ Al)的表面、断面形貌及界面的结合状态，分析了镀层和基体之间的结合机理。结果表明，Ni镀层与复合材料界面有良好的结合，在复合材料表面的SiC-Al界面，初期沉积物Ni按Al的晶格外延生长出现微晶层，然后吸附原子扩散迁移、碰撞结合并与界面上的SiC晶格匹配生长，在镍层中诱发了拉伸应力。镍晶格和基体粒子之间产生了键合作用，形成的键显示出共价键和离子键的混合性质。     

长脂肪碳链卟啉的合成及其LB膜的制备和气敏性质研究

1983年RuaudelTeixier［’j首先合成了两类具有长脂肪碳链的双亲性叶咐，其成膜性表明，它们可以形成良好的LB膜．M6hwald‘’修合成了不对称可成股叶琳，并对其膜结构和分子间作用进行了研究．Lecomte“‘等用钴叶琳和咪吐等衍生物以混合交替形式来模拟血红蛋白的吸氧及放氧过程，发现它可作为氧的载体．Tredgold［“报道了用铜、钻、镍、锰叶琳和无金属叶琳的LB膜元件对NO。、H。S和CO进行检测，发现铜叶琳对NO。有很高的敏感性，而对其它气体则无反应，显示出良好的选择性．本文在合成6种长脂肪碳链的双亲性叶琳化合物的基础上，…