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arXiv 1504.04129physics.optics
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光纤中级联布里渊散射的分析

Analysis of Cascaded Brillouin Scattering in Optical Fibres

Neil G. R. Broderick, Stephane X. Coen

摘要:

级联布里渊散射在光子学的许多领域中越来越受到关注(例如,参见[1]和[2]),并且已经由许多小组进行了实验研究。例如,在增益辅助实验中,已经观察到多达800条不同的线[3],而在无源腔中,最近已经证明了几条布里渊线的锁模[4]。我们表明,虽然每对线通过创建一个声学声子的相互作用,所产生的声场仍然可以写为只有两个波(向前和向后传播波)的总和。这种新的分析结果在一组强耦合的振幅方程的字段,在这里导出的第一次在光纤的上下文中。此外,我们表明,以前的作者误解了声场的性质,导致不正确的耦合方程组。

英文摘要:

Cascaded Brillouin scattering is increasingly becoming of interest in many areas of pho- tonics (e.g. see [1] and [2]) and has been studied experimentally by many groups. In gain assisted experiments for example up to nearly 800 distinct lines have been observed[3] while in passive cavities, mode locking of a few Brillouin lines has recently been demonstrated[4]. We show that although each pair of lines interact through the creation of an acoustic phonon the resulting acoustic field nevertheless can be written as the sum of only two waves (a forward and backward propagating wave). This new analysis results in a set of strongly coupled amplitude equations for the fields that are derived here for the first time in the context of optical fibres. More-over we show that previous authors have mis- understood the nature of the acoustic field resulting in incorrect sets of coupled equations.

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