Fault detection of few-mode fiber based on high-order mode with high fault detection sensitivity

Song Congcong; Liu Xiuhuan; Liu Feng; Zhang Meiling; Hu Guijun

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Fault detection of few-mode fiber based on high-order mode with high fault detection sensitivity

机译：基于高级故障检测灵敏度的高阶模式少量模式光纤故障检测

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We report on the fusion splice loss characteristics of each mode in few-mode fiber (FMF). The fusion fault loss characteristics of all modes of the six-mode step-index and graded-index fibers are measured, respectively. The high-order modes with high fault detection sensitivity are presented. The fault events with different loss amplitudes can be accurately characterized by high-order modes. On this basis, a fault detection and location method for FMF based on backscattered light of high-order modes is proposed and experimentally demonstrated. Rayleigh backscattering light of high-order modes is utilized to detect the faults of 7.2 km six-mode step-index fiber with three fusion splice points with different fusion quality, the detection results of each mode are compared. The high-order modes LP21a, LP21b, and LP02 with high fault detection sensitivity are shown, three fault points located around 1.03, 3.1, and 3.2 km of the FMF are successfully detected. While the LP01, LP11a, and LP11b modes can detect only one fault point, which is located around 3.19 km of the FMF. (C) 2019 Optical Society of America

机译：我们在几种模式光纤（FMF）中报告了每种模式的融合剪接特性。分别测量六模阶梯索引和分级射光纤的所有模式的融合故障损失特性。提出了具有高故障检测灵敏度的高阶模式。具有不同损耗幅度的故障事件可以通过高阶模式精确表征。在此基础上，提出了基于高阶模式的反向散射光的FMF故障检测和定位方法，并实验证明。 Rayleigh反向散射光的高阶模式可用于检测7.2 km六模式阶梯指数光纤的故障，具有三个融合点具有不同的融合质量，比较了每种模式的检测结果。具有高故障检测灵敏度的高阶模式LP21A，LP21B和LP02，成功检测到位于1.03,3.1和3.2 km的三个故障点。虽然LP01，LP11A和LP11B模式只能检测到一个故障点，其位于FMF的3.19公里。（c）2019年光学学会

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来源
《Optics Letters》 |2019年第18期|共4页
作者
Song Congcong; Liu Xiuhuan; Liu Feng; Zhang Meiling; Hu Guijun;
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作者单位

Jilin Univ Coll Commun Engn Changchun 130012 Jilin Peoples R China;

Jilin Univ Coll Commun Engn Changchun 130012 Jilin Peoples R China;

Jilin Univ Coll Commun Engn Changchun 130012 Jilin Peoples R China;

Jilin Univ Coll Commun Engn Changchun 130012 Jilin Peoples R China;

Jilin Univ Coll Commun Engn Changchun 130012 Jilin Peoples R China;

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正文语种 eng
中图分类计量学;光学;
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Fault detection of few-mode fiber based on high-order mode with high fault detection sensitivity

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