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arXiv physics/0208049physics.optics
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布里渊放大器传输信道的窄谱响应

Narrow Spectral Response of a Brillouin Amplifier transmission channel

Shmuel Sternklar, Er'el Granot

摘要:

本文研究了布里渊放大器在受激布里渊散射带宽内的频谱响应。这是通过用低频对泵浦进行幅度调制来完成的,因此,与先前的研究不同,调制泵浦的频谱在所有情况下都小于SBS带宽。我们从理论和实验上表明,不同于相位调制,这是在文献中报道的,幅度调制增加布里渊放大器增益,并且这种效果具有非常窄的带宽。只有低于某一截止频率的调制频率才能增加增益。该截止频率与光纤的长度成反比,因此可以任意小。

英文摘要:

We investigate the spectral response of a Brillouin amplifier in the frequency regime within the SBS bandwidth. This is done by amplitude modulating the pump with a low frequency, and therefore, unlike previous studies, the spectrum of the modulated pump is, in all cases, smaller than the SBS bandwidth. We show both theoretically and experimentally that unlike phase modulation, which was reported in the literature, the amplitude modulation increases the Brillouin amplifier gain, and that this effect has a very narrow bandwidth. Only modulation frequencies that are lower than a certain cut-off frequency increase the gain. This cut-off frequency is inversely proportional to the fiber's length, and can therefore be arbitrarily small.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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