查询词典 modulation

The paper designs and develops the direct current drive circuit of SOA to realize the cross phase modulation for dual-loop optical buffer in the lab.

本文设计并研制出了SOA的直流驱动电路，用于实现本实验室中双环全光缓存器中信号光与控制光的交叉相位调制。

After some discussion on several common nonlinear effects in WDM systems, CROSS Phase Modulation effect is investigated for example to find how the nonlinear impairment can be considered by network entities.

在简要介绍了几种常见的非线性效应，给出了它们对系统传输性能影响的评估与计算公式之后，以交叉相位调制效应为例提出了一种名为等效系统函数法的方法计算XPM导致的相位-幅度噪声，把XPM效应对系统传输性能的影响转化为网络层RWA实体可以利用的形式。

Thus, the mechanism of the transition may be simply attributed to the cross modulation between the intra-cavity laser intensity and the concentration of the absorbing centers within the Cr4+:YAG crystal.

因而推断这种脉冲形成的机制是雷射光的强度与可饱和吸收体的透明度两者一消一长互相调制而成。

The basic characteristics and basic structures of EDFAs are summarized. The two major nonlinear processes in EDFAs (gain dynamics and cross phase modulation) and their influences to the WDM optical fiber communication systems are described in detail.

论文对掺铒光纤放大器的基本特性以及基本结构进行了总结；对掺铒光纤放大器中的两种非线性过程—增益的动态响应和交叉相位调制效应，以及它们对波分复用光纤通信系统所造成的影响进行了详尽描述。

A theoretical model of wavelength conversion based on cross gain modulation in semiconductor optical amplifier is derived. Characteristics of extinction ratio of converted signal under both co- and counter-propagating scheme are discussed in details.

建立了基于半导体光放大器-交叉增益调制的波长转换理论模型，利用分段方法对交叉增益调制波长转换器同向和相向两种工作方式下消光比特性作了详细的研究。

Using the Lagrange varitional method and considering the cross phase modulation as perturbation factor, the characteristic of DMS are synthetically analyzed and studied in wavelength division multiplexing and optical time division multiplexing systems for the first time.

运用拉格朗日变分法视XPM为扰动因子，首次综合解析了WDM和OTDM系统中DMS特性，并利用解析结果对不同的系统进行研究。

Novel All-Optical AND Gate Based on Cross Gain Modulation in Cascaded Semiconductor Optical Amplifiers. Chinese Journal of Lasers, 2004, 31(12): 1433～1436 in chinese

作者简介王颖(1979―)，女，华中科技大学光电子工程系硕士研究生，主要从事半导体光放大器在全光逻辑方面的研究。

A novel ultrafast SOA model is presented and the numerical arithmetic is provided.Secondly, an analytical formula for wavelength conversion of transient cross phase modulation is deduced from the viewpoint of impulse response function.

概括全文的研究成果和贡献，有如下几个方面：(1)研究了SOA实现全光信号处理的基本原理，推导了SOA中最基本的光场传输方程和载流子速率方程，分析各种非线性效应的原理及其应用。

The average linewidth enhancement is the latent physical attribute of SOA that is the groundwork to investigate the OSP based on cross phase modulation of SOA.

平均线宽增强因子是SOA的本征物理属性，它不随输入信号的改变而改变，而器件有效线宽增强因子则是系统相关的，它决定了脉冲的相位变化和增益变化的关联度，是研究基于SOA相位调制效应的光信号处理问题的基础。

When several ultrafast pulses are propagating simultaneously, nonlinear processes such as cross-phase modulation, cross non-degenerate TPA, SRS and four-wave mixing, and so on, will be considered. One of the nonlinear processes will play dominance for various conditions.

当多波长超快脉冲在波导中传输时，脉冲之间将发生交叉相位调制、交叉非简并双光子吸收、受激拉曼散射和四波混频等非线性过程，在不同的条件下，将具有不同的非线性过程起主导作用。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。