共查询到18条相似文献,搜索用时 46 毫秒
1.
利用啁啾光纤光栅进行色散补偿的研究 总被引:1,自引:0,他引:1
分析了由于光纤的色散引起的脉冲展宽,并介绍了啁啾布拉格光纤光栅进行色散补偿的基本原理。2-5Gb/s、100km 色散补偿的实验结果表明,利用啁啾光纤光栅进行色散补偿是一种切实可行的色散补偿方案。 相似文献
2.
3.
4.
5.
6.
针对直接调制的半导体激光器产生的非线性啁啾,设计了一种新型的三次啁啾光纤光栅,与线性啁啾光纤光栅相比,它能更为彻底地补偿此类非线性啁啾. 相似文献
7.
8.
啁啾光栅色散及时延特性研究 总被引:1,自引:1,他引:1
基于耦合模理论,通过对耦合波方程进行相位共轭变换,将反向耦合波方程变换为Riccati微分方程,利用数值解法对常耦合系数和高斯型耦合系数线性啁啾光栅的反射特性、色散特性和时延特性进行了详细分析,为设计具有理想效果的色散补偿器件提供了有效的理论方法。 相似文献
9.
10.
11.
12.
SHU Xuewen SHI Wei JIANG Shan HUANG Dexiu 《Chinese Journal of Lasers》2000,9(4):319-324
1 Introduction Fibergratingsareprovedtobeoneofthemostimportantrecentdevelopmentsinthefieldofopticalfibertelecommunicationsandsensing .Theyarelikelytohaveapplicationintwomainareas:dispersioncompensationinlong haulfibernetworks[1,2 ]andwavelengthroutinginw… 相似文献
13.
14.
The scheme of using linearly chirped fiber gratings to equalize dispersion which would produce nonlinear distortion in long trunk lines lightwave CATV systems has been put forward. The results of the numerical computations show that the CSO is significantly reduced when the grating parameters have been properly designed, and the optical transmission distance can be prolonged effectively. 相似文献
15.
利用均匀相位掩模板制作线性啁啾光纤光栅 总被引:2,自引:1,他引:2
理论上分析并从实验上验证了一种利用均匀相位掩模板写入啁啾光纤光栅的方法:将光纤弯曲,由于光纤离掩模板的距离不同从而使光纤光栅的周期轴向渐变,由此产生啁啾。分析了这种啁啾光纤光栅的谱特性和时延特性,同时也分析了由于光纤离掩模板的距离不同而引起的折射率调制变化给光纤光栅特性带来的影响。设计了一种石英曲面,利用其使光纤按照弯曲函数进行弯曲,然后进行紫外曝光制成了线性的啁啾光纤光栅。实验中制作的啁啾光纤光栅色散值为-1102 ps/nm,纹波为17ps。通过改变弯曲函数就可以实现利用一块均匀相位掩模板制作不同啁啾量的啁啾光纤光栅的目的,降低了啁啾光纤光栅的制作成本。 相似文献
16.
Lin Zhu Guozhong Wang Li Xia Shizhong Xie 《International Journal of Infrared and Millimeter Waves》2002,23(3):465-473
Chirped fiber Bragg grating (CBG) has been used to compensate the dispersion in the optical fiber communication system. We substitute dispersion compensation fiber (DCF) with CBG in the 10Gbit/s disperion-managed system over 1100km. In order to get system performance in the nonideal situation, the parameters of CBG are varied from the designed optimum in some extent. Post-, pre- and dual-compensation methods are compared. 相似文献
17.
Shilie Zheng Xianmin Zhang 《International Journal of Infrared and Millimeter Waves》2005,26(7):1005-1016
A chirped fiber grating (CFG) written by the moving fiber/phase mask scanning beam technique with a uniform mask is used to demonstrate the dispersion compensation in the externally modulated microwave/millimeter-wave over fiber system. It is found that the use of the CFG is an efficient way to compensate for the severe RF power degradation induced by the fiber chromatic dispersion, which results in a significant improvement in the transmission performance. The signal to noise ratio is improved from 4.8 dB to 24.4 dB when 10.58 GHz RF signal carrying 5 Mbit/s QPSK format data is transmitted over 35 km single mode fiber. 相似文献