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arXiv 1211.2249physics.optics
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激光线宽随噪声展宽的受激布里渊散射在Optical Fibers中的维持

Stimulated Brillouin Scattering Thresholds in Optical Fibers for Lasers Linewidth Broadened with Noise

V. R. Supradeepa

摘要:

用于加宽光源的线宽的相位和/或强度调制技术是抑制光纤中的受激布里渊散射(SBS)的公知方法。用于以简单方式实现显著带宽增强的常用技术是使用滤波噪声源进行相位调制。我们将在这里证明,在这种情况下,噪声的随机性质需要包括长度相关的SBS阈值增强校正。这种效应对于大多数高功率光纤放大器所共有的短光纤长度变得特别显著。

英文摘要:

Phase and/or intensity modulation techniques to broaden the Linewidth of an optical source are well known methods to suppress stimulated Brillouin scattering (SBS) in optical fibers. A common technique used to achieve significant bandwidth enhancement in a simple fashion is to phase modulate with a filtered noise source. We will demonstrate here that, in this case the stochastic nature of noise requires an inclusion of length dependent corrections to the SBS threshold enhancement. This effect becomes particularly significant for short fiber lengths common to most high power fiber amplifiers.

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