Nonlinear fibre optics overview
Nonlinear fibre optics overview
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非线性光纤概述
DOI：
10.1017/cbo9780511750465.004
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发表时间：
2010
期刊：
影响因子：
3.6
通讯作者：
J. Dudley
中科院分区：
文献类型：
--
作者：
J. Travers;M. Frosz;J. Dudley
介绍本章提供了一个简明扼要的概述时，可以发生的光场在光纤中传播的各种非线性效应。鉴于非线性光纤光学是一个非常成熟的研究领域，它已经涵盖了许多以前的评论和专著非常详细。读者特别可以参考Agrawal（2007）的一个处理方法，该方法以一种同时可访问和技术全面的方式结合了理论和实验的回顾。其他包含有价值材料和原始文献参考的专著包括Taylor（2005）和Alfano（2006）。在这种治疗中，我们只提供了一个简短的介绍的主要概念，特别强调在超连续谱产生中发挥重要作用的影响。在适当的情况下，这些影响将在其他章节中更详细地讨论。我们做的，但是，治疗的非线性脉冲传播的数值模拟比通常在文献中发现的更深入。电磁波或脉冲的传播取决于其传播的介质。在真空中脉冲可以不改变地传播。然而，当在介质中传播时，电磁场与原子相互作用，这通常意味着脉冲经历损耗和色散。后一种效应的发生是因为脉冲的不同波长分量由于折射率的波长依赖性而以不同的速度传播。在光波导中，由于光的限制，总色散有一个额外的分量，称为波导色散，这是不可忽略的。
Introduction This chapter provides a succinct overview of the various nonlinear effects that can occur when a light field propagates in an optical fibre. Given that nonlinear fibre optics is a very mature research field, it has been covered in much detail by many previous reviews and monographs. The reader is particularly referred to Agrawal (2007) for a treatment that combines a review of both theory and experiments in a way that is simultaneously accessible and technically comprehensive. Other monographs that contain valuable material and references to the original literature include Taylor (2005) and Alfano (2006). In this treatment we provide only a brief introduction to the major concepts, placing particular emphasis on effects that play an important role in supercontinuum generation. Where appropriate, these effects will be discussed in more detail in other chapters. We do, however, treat the numerical modelling of nonlinear pulse propagation in more depth than is usually found in the literature. Modelling nonlinear pulse propagation The propagation of an electromagnetic wave or pulse depends on the medium in which it propagates. In vacuum a pulse can propagate unchanged. When propagating in a medium, however, an electromagnetic field interacts with the atoms, which generally means that the pulse experiences loss and dispersion. The latter effect occurs because the different wavelength components of the pulse travel at different velocities due to the wavelength dependence of the refractive index. In an optical waveguide, the total dispersion has an additional component due to the light confinement called waveguide dispersion, which cannot be neglected.