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时延纹波
相关语句
  time delay ripple
     Impact of Phase Masks′ Stitching Errors on the Time Delay Ripple of the Chirped Fiber Bragg Grating
     相位掩模板接缝相差对光栅时延纹波的影响
短句来源
     The results show that,compared with symmetrical apodization method,the asymmetrical apodization method can avoid the disadvantage of the former method that widens the reflectivity bandwidth by reduction of apodization ratio,which meanwhile increases the time delay ripple. The left-shifted apodization method can reduced the time delay ripple by 43.5%,adjacent with the experimental result of 39.9%,while the refectivity spectrum is nearly unchanged.
     结果表明,与对称切趾相比,左移非对称切趾可避免对称切趾中为增大反射谱带宽而减小切趾比例使时延纹波增大的缺点,在保持反射谱纹波基本不变的前提下将时延曲线纹波降低了43.5%(与实验结果39.9%相吻合)。
短句来源
  delay ripple
     Impact of Phase Masks′ Stitching Errors on the Time Delay Ripple of the Chirped Fiber Bragg Grating
     相位掩模板接缝相差对光栅时延纹波的影响
短句来源
     Delay characteristics of cascaded chirped fiber Bragg gratings (CFBGs) have been theoretically analyzed. Delay ripple increases while the number of cascaded CFBGs increases, and also increases as the wavelength interval between neighbor CFBGs decreases.
     理论分析了啁啾光栅级联应用于波分复用 (WDM)系统中的时延特性 ,时延纹波随光栅级联个数的增多而增大 ,随级联光栅的相邻光栅波长间隔增大而减少。
短句来源
     The results show that,compared with symmetrical apodization method,the asymmetrical apodization method can avoid the disadvantage of the former method that widens the reflectivity bandwidth by reduction of apodization ratio,which meanwhile increases the time delay ripple. The left-shifted apodization method can reduced the time delay ripple by 43.5%,adjacent with the experimental result of 39.9%,while the refectivity spectrum is nearly unchanged.
     结果表明,与对称切趾相比,左移非对称切趾可避免对称切趾中为增大反射谱带宽而减小切趾比例使时延纹波增大的缺点,在保持反射谱纹波基本不变的前提下将时延曲线纹波降低了43.5%(与实验结果39.9%相吻合)。
短句来源
  “时延纹波”译为未确定词的双语例句
     A 2015km 12×10Gbps transmission with error-free was implemented in the NRZ-employed system where dispersion was compensated by the chirped fiber Bragg grating (CFBG).
     ■ 比较和分析了啁啾光纤光栅的反射谱纹波、群时延纹波以及带宽对NRZ、RZ和CSRZ码三种调制码型的不同影响,对啁啾光纤光栅的不理想特性对使用高级调制码型传输系统的影响给出了物理解释。
短句来源
  相似匹配句对
     Impact of Phase Masks′ Stitching Errors on the Time Delay Ripple of the Chirped Fiber Bragg Grating
     相位掩模板接缝相差对光栅时延纹波的影响
短句来源
     Delay Characteristics for the Asynchronous Tranfer Mode
     异步传送模式的时延特性
短句来源
     Stability of networked control systems with time-delay
     时延网络控制系统的稳定性
短句来源
     Study of the helical wave-guide
     螺旋波纹波导研究
短句来源
     Analysis of the Ripple in Urban Mass Transit DC Switching Power
     直流开关电源纹波分析
短句来源
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  delay ripple
The effect of the group delay ripple of the fiber grating is also investigated in the recirculating systems, and it is shown that the transmission distance is limited to 4 cycles (4×167.1km) in the loop with the power penalty fluctuation below 1.0dB.
      
Thus the group delay ripple should be reduced to allow for the wavelength drift of ±5GHz.
      
We describe the theory of the group delay ripple (GDR) generated by apodized chirped fiber gratings using the analogy between noisy gratings and superstructure Bragg gratings.
      
Dispersion compensator imperfections, such as multi-path interference, group delay ripple, insertion loss ripple and limited per-channel compensation bandwidth, place additional limitations on the achievable transmission distance and capacity.
      
In the second section we describe the techniques used to fabricate high performance dispersion compensation gratings as well as the theory of the primary defect of fiber grating dispersion compensation: group delay ripple (GDR).
      
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The good quality cascaded multiwavelength chirped fiber Bragg grating (MFBG) were written using scanning mask/fiber technique.The MFBG had low PMD (<1.2ps) and low insertion loss (<4dB).Dispersion of 4×10Gbps WDM transmission over 640km of G.652 fiber was compensated using MFBG with all channels' power penalty less than 1.5dB.We had studied fluctuation of power penalty when source wavelength changed ±20GHz around ITU-T center.The fluctuation was less than 0.2dB.The experiment showed that overall penalty was...

The good quality cascaded multiwavelength chirped fiber Bragg grating (MFBG) were written using scanning mask/fiber technique.The MFBG had low PMD (<1.2ps) and low insertion loss (<4dB).Dispersion of 4×10Gbps WDM transmission over 640km of G.652 fiber was compensated using MFBG with all channels' power penalty less than 1.5dB.We had studied fluctuation of power penalty when source wavelength changed ±20GHz around ITU-T center.The fluctuation was less than 0.2dB.The experiment showed that overall penalty was proportional either to the number or to the square root of the number of the MFBG employed along the link.Ripple of overall MFBG delay and fluctuation of overall MFBG reflectivity were not simply piled up,but related with the place of MFBG and line amplifier gain.

用计算机控制扫描法写入的低偏振模色散 (PMD <1 2ps)切趾啁啾光纤光栅级联补偿了 4× 10Gbps在G 6 5 2光纤上传输 6 40km的色散 ,功率代价不大于 1 5dB ,光栅引入的损耗小于 4dB ,并研究了光源波动时系统功率代价的变化 .实验表明总的功率代价不与光栅组的数目或光栅组数目的平方根成比例关系 ,为长距离无中继在G 6 5 2光纤传输用光栅补偿色散提供了实验依据 ,光栅的时延纹波不是各组单个光栅纹波的简单叠加 ,而是与光栅的位置及EDFA增益有关 .

The strain effect on fiber Bragg grating (FBG) wavelength, 3 dB bandwidth reflectivity and characterizatin of delay is experimentally studied. Change of the center wavelength and 3 dB bandwidth is linear with the strain, but the reflectivity decreases when the strain increases. Linearity of delay becomes better, root-mean-square deviation of delay ripple reduced and compensation lessens, when the strain increases.

对光纤光栅在应力作用下光栅的中心波长、带宽、时延进行了研究,实验中发现光栅的中心波长、带宽随应力改变而呈线性变化,时延的线性度在光栅拉伸时变得更好,时延纹波减小,补偿量减小,光栅的反射率也减小。

The delay ripple of chirped FBG is analyzed in detail. A simple physical model and function of filter are set up about chirped FBG (CFBG). A numerical simulation of grating delay ripple has been done using SchrAo¨dinger equation and compared with experiment. The research shows that the system degradation depends on the period and amplitude of delay ripple. The period of CFBGs′ delay ripple is 0.01~0.1 nm indicated through a lot of experiments. The amplitude of delay ripple must be less than 15 ps in order...

The delay ripple of chirped FBG is analyzed in detail. A simple physical model and function of filter are set up about chirped FBG (CFBG). A numerical simulation of grating delay ripple has been done using SchrAo¨dinger equation and compared with experiment. The research shows that the system degradation depends on the period and amplitude of delay ripple. The period of CFBGs′ delay ripple is 0.01~0.1 nm indicated through a lot of experiments. The amplitude of delay ripple must be less than 15 ps in order to assure eye opening penalty less than 0.5 dB.

对啁啾光栅的时延波动进行了详细的分析 ,建立了时延波动的简易模型和光栅的滤波函数。大量实验和计算表明 ,光纤光栅的时延纹波周期在 0 .0 1\~ 0 .1nm之间 ,并且在光纤光栅的阻带内 ,时延纹波周期随波长增大而逐渐增大。利用薛定谔方程对时延波动对系统的影响进行了仿真 ,得出了时延波动对系统的影响不仅与波动大小有关 ,而且还与时延波动周期有关 ,并用实验进行了验证

 
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