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normal group velocity dispersion
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  “normal group velocity dispersion”译为未确定词的双语例句
     The approximation of the phase introduced by self-phase modulation (SPM) is reasonably calculated and the spectrum broadening factor is given basing on nonlinear Schrdinger equation. The spectrum of propagating pulses is broadened seriously by SPM in the fiber with normal group velocity dispersion (GVD) when gain (G) exists.
     从非线性薛定谔方程出发,对SPM作用引起传输脉冲的相位作了合理近似,引入了频谱展宽因子,发现在存在增益时正色散光纤的SPM作用加剧了脉冲频谱展宽幅度,并且脉冲中心和两翼部分的频谱展宽差异很大.
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  相似匹配句对
     normal group.
     E、西药对照组(心律平组)。
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     E: normal control group.
     E组 :正常对照。
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     . group's.
     而且实验组的增量显著高于控制组的增量。
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     ] group.
     ]组。
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     Relativity of the Velocity of light
     论光速的相对性
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  normal group velocity dispersion
In the regions of anomalous and normal group velocity dispersion, the instability increments are determined as functions of the frequency and the wave numbers of perturbations.
      
A solution to the problem of realizing the collapse of three-dimensional wave packets in nonlinear media with normal group velocity dispersion is proposed.
      
On the collapse of wave packets in a medium with normal group velocity dispersion
      
The structural features of wave collapse in medium with normal group velocity dispersion
      


Through computer simulation, the compression of bright optical pulses by dark solitons in the normal group-velocity dispersion region of single-mode fibers is analyzed both qualitatively and quantitatively. The results show that the compression ratio and compressed peak power of the bright pulse depend upon the initial relative peak power of the dark pulse to the bright pulse. The higher the initial relative peak power is, the higher the compression ratio and compressed peak power of...

Through computer simulation, the compression of bright optical pulses by dark solitons in the normal group-velocity dispersion region of single-mode fibers is analyzed both qualitatively and quantitatively. The results show that the compression ratio and compressed peak power of the bright pulse depend upon the initial relative peak power of the dark pulse to the bright pulse. The higher the initial relative peak power is, the higher the compression ratio and compressed peak power of the bright pulse are. We fouund that, for given initial conditions, there exists an optimum fiber length at which the width of the compressed bright pulse is minimum and that the optimum fiber length decreases with the initial relative peak power.

对单模光纤正群速色散区中基于暗孤子交叉相位调制的亮脉冲压缩进行了定量计算和详细分析。结果表明,亮脉冲的压缩程度与暗孤子相对于亮脉冲的初始峰值功率有关。初始相对峰值功率愈高,亮脉冲的压缩比和压缩后的峰值功率愈高,同时所需的光纤长度愈短。对于给定的初始条件,光纤长度存在一最佳值。在最佳长度处,压缩后的亮脉冲峰值功率最高,宽度最窄。

The nonlinear propagation and evolution procedures of chirped polses in single mode linear dispersion fibers are considered both analytically and numerically.The results show that in the normal group velocity dispersion of single mode linear dispersion fibers,the red shift chirp which is accompanied with semi conductor laser can be removed by the blue shift chirp produced during the course of the propagation.

对啁啾脉冲在单模线性色散光纤中的非线性传输演化过程进行了解析分析和定量的数值计算.结果表明,在单模线性色散光纤正群速色散区,用输入光脉冲产生的兰移啁啾可以消除半导体激光器中产生的光脉冲红移啁啾

Through computer simulation,the compression of weak optical pulses in the normal group-velocity dispersion region by higher-order solitons in the anomalous group-velocity dispersion region of single-mode fibers is analyzed both qualitatively and quantitatively.The results show that the copropagating a weak pulse with an intense pump pulse can lead to generation of compressed pulse pair in an optical fiber whose minimum-dispersion wavelength is chosen such that...

Through computer simulation,the compression of weak optical pulses in the normal group-velocity dispersion region by higher-order solitons in the anomalous group-velocity dispersion region of single-mode fibers is analyzed both qualitatively and quantitatively.The results show that the copropagating a weak pulse with an intense pump pulse can lead to generation of compressed pulse pair in an optical fiber whose minimum-dispersion wavelength is chosen such that it falls between the pump and the signal wavelength.Numerical simulation also shows that the higher the initial relative peak power of higher-order solitons is,the higher compression ratio and compressed peak power of pulse pair are.At last,the physical mechanism based on this compression is analyzed detailedly.

基于波长位于反常色散区强泵浦脉冲的交叉相位调制 ,通过对波长位于正常色散区的弱脉冲在单模光纤中的传输进行数值模拟 ,得出了一种压缩脉冲的新方法 .计算结果表明 ,在零色散波长位于弱脉冲波长和泵浦脉冲波长中间附近的情况下 ,交叉相位调制 (XPM)与群速度色散 (GVD)的共同作用能使弱脉冲演化成比其初始宽度窄得多的脉冲对 .同时我们还发现 ,泵浦脉冲的相对于信号脉冲初始峰值功率愈高 ,初始相对宽度越小 ,所得弱脉冲的压缩比和压缩后脉冲峰值功率愈高 ,压缩到最窄时所需光纤长度越短 .最后对基于这一压缩的物理机制作了详尽的分析 .

 
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