Detailed Characterization of Optical Fibers by Combining S2 Imaging With Correlation Filter Mode Analysis
Detailed Characterization of Optical Fibers by Combining S2 Imaging With Correlation Filter Mode Analysis
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DOI：
10.1109/jlt.2013.2297337
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发表时间：
2014-03-15
影响因子：
4.7
通讯作者：
Schulzgen, Axel
中科院分区：
文献类型：
--
作者：
Jollivet, Clemence;Flamm, Daniel;Schulzgen, Axel
空间和光谱分辨成像（S-2成像）和相关滤波技术（CFT）是两种非常不同的、广泛应用的光纤模式分析技术。这两种方法已分别成功地用于多模和多模光束的分解。在这项研究中，我们提出了一种在独特系统中结合S-2成像和CFT模式分析的新型实验工具。我们证明了这两种方法是互补的能力，完全解决标量和矢量值的横模场。使用来自组合实验的结果，直接比较从CFT分析和S-2成像评估的模式功率（rho（2））用于宽范围的光纤光束（从单模到多模）。其结果是，我们实验确定的模式检测极限的每个模式分析，并证明S-2成像精度范围可以大大增加采用分析模式评价方法。结论中包含一个表格，总结了每个模式分析的专业知识。
Spatially and spectrally resolved imaging (S-2 imaging) and correlation filter technique (CFT) are two very different, widespread fiber mode analysis techniques. Both techniques have been successfully employed to decompose few-modes and multimode beams respectively. In this study, we present a novel experimental tool combining S-2 imaging and CFT mode analyses in a unique system. We demonstrate that both methods are complementary with the ability to fully resolve scalar and vector-valued transverse modal fields. Using results from the combined experiment, mode powers (rho(2)) evaluated from CFT analysis and S-2 imaging are directly compared for a wide range of fiber beams (from single-to multi-mode). As a result, we experimentally identify the mode detection limit of each mode analysis and prove that S-2 imaging accuracy range can be considerably increased employing an analytical mode evaluation method. The conclusion contains a table summarizing the expertise of each mode analysis.