Experimental Observation of Inter-Modal Cross-Phase Modulation in Few-Mode Fibers
Experimental Observation of Inter-Modal Cross-Phase Modulation in Few-Mode Fibers
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DOI：
10.1109/lpt.2013.2242879
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发表时间：
2013-03-15
影响因子：
2.6
通讯作者：
Lingle, Robert, Jr.
中科院分区：
文献类型：
--
作者：
Essiambre, Rene-Jean;Mestre, Miquel A.;Lingle, Robert, Jr.
我们通过实验证明了数据调制泵浦和占据少模光纤不同空间模式的未调制探头之间的宽带非线性相互作用。这种非线性相互作用归因于模间交叉相位调制 (IM-XPM)，并且当信号和探头具有相似的群速度时，这种相互作用达到最大。这可以对应于波之间的几个太赫兹的波长间隔。发现测量的 IM-XPM 的幅度与测量的具有相似非线性系数的模内 XPM 相当。与 XPM 半解析模型的比较表明与测量结果非常一致。
We experimentally demonstrate a broadband nonlinear interaction between a data-modulated pump and an unmodulated probe occupying different spatial modes of a few-mode fiber. This nonlinear interaction is attributed to inter-modal cross-phase modulation (IM-XPM) and found to be maximum when signal and probe have similar group velocities. This can correspond to a few THz of wavelength separation between waves. The magnitude of the measured IM-XPMis found to be comparable to the measured intra-modal XPM with similar nonlinear coefficients. A comparison to a semi-analytical model of XPM shows good agreement with the measurements.