Multiple-order adaptive dispersion compensation using polynomially-chirped grating devices
Multiple-order adaptive dispersion compensation using polynomially-chirped grating devices
复制标题
使用多项式啁啾光栅器件的多阶自适应色散补偿
DOI：
10.1007/s003400100667
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发表时间：
2001
期刊：
影响因子：
--
通讯作者：
S. Walker
中科院分区：
文献类型：
--
作者：
M. Parker;S. Walker
平面阵列波导光栅或分布式布拉格反射器（分别为AWG和DBR）等器件在光纤点对点通信和网络领域中的重要性日益增加。在密集波分复用（DWDM）的特定背景下，这些器件作为波长选择元件发挥着公认的作用。最近，啁啾变体已被用作色散补偿器，提供基本和高阶偏离恒定群延迟的宽带减少。然而，到目前为止，高阶色散补偿的系统方法的存在还没有得到承认。此外，我们已经确定了一个全面的AWG和DBR设备之间的同构，使前者的横向几何形状的设计特征被映射到后者的纵向结构。在这里，我们对这些重要的基于无源光学光栅的器件进行了系统的研究，首先考虑二阶色散补偿（DC）的解析解，然后考虑具有100 GHz带宽的三阶和四阶色散补偿器。然后，我们审查DC，3 dB带宽和通带色散涟漪的优化策略，由器件啁啾，切趾，耦合强度和多相传递函数叠加。我们的结论与光栅参数灵敏度的初步讨论所证明的蒙特卡罗分析。
Devices such as the planar arrayed-waveguide grating or the distributed Bragg reflector (AWG and DBR, respectively) are assuming increasing importance in the areas of fibre point-to-point communication and networking. In the particular context of dense wavelength-division multiplexing (DWDM), these devices play a well-established role as wavelength-selective elements. More recently, chirped variants have found use as dispersion compensators, offering wideband reduction of both basic and higher-order departures from constant group delay. However, up to the present time, the existence of a systematic approach to higher-order dispersion compensation has not been recognised. Additionally, we have identified a comprehensive isomorphism between AWG and DBR devices that allows the design characteristics of the former transverse geometry to be mapped on to the latter longitudinal structure. Here, we present a systematic study of these important passive optical grating-based devices which considers, firstly, analytic solutions for 2nd-order dispersion compensation (DC), and then 3rd- and 4th-order dispersion compensators with 100 GHz bandwidth. We then review optimisation strategies for DC, 3 dB bandwidth, and passband dispersion ripple, as determined by device chirp, apodisation, coupling strength and polyphase transfer function superposition. We conclude with a preliminary discussion of grating parametric sensitivity as evidenced by Monte Carlo analysis.