Total spectral power-based method for estimating Brillouin frequency shift in optical fibers
Total spectral power-based method for estimating Brillouin frequency shift in optical fibers
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DOI：
10.35848/1347-4065/acac58
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发表时间：
2023-01
影响因子：
1.5
通讯作者：
Haruki Sasage;Mana Sakamoto;Kohei Noda;Kentaro Nakamura;Y. Mizuno;Heeyoung Lee
中科院分区：
文献类型：
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作者：
Haruki Sasage;Mana Sakamoto;Kohei Noda;Kentaro Nakamura;Y. Mizuno;Heeyoung Lee
提出了一种不使用电频谱分析仪就能估算整个传感光纤布里渊频移的方法。对布里渊增益谱进行下变频和低通滤波，并使用其总发射功率来估计BFS。实验表明，该方法的应变动态范围是传统的斜率辅助方法的两倍。
A cost-effective method for estimating the Brillouin frequency shift (BFS) of the whole sensing fiber without using an electrical spectrum analyzer is developed. The Brillouin gain spectrum is down-converted and low-pass-filtered, and its total transmitted power is used to estimate the BFS. The strain dynamic range of this method is experimentally shown to be double the value of a conventional slope-assisted method.