Opt Lett. 2023 Feb 1;48(3):668-671. doi: 10.1364/OL.478085.
We report the experimental demonstration of efficient second-harmonic generation by splicing optically poled fiber segments. A device made from five segments each 20 cm-long exhibits, at a fundamental average power of 4.2 mW, a maximum increase of 5.5 in the conversion efficiency with respect to a single 20 cm poled fiber, corresponding to a conversion efficiency of 5.4%. For any considered fundamental power, the conversion efficiency at the output of a five-segment device is larger than the efficiency of a single poled fiber having the same length.
我们报告了通过拼接光极化光纤段实现高效二次谐波产生的实验演示。由五个 20 厘米长的光纤段组成的器件，在基频平均功率为 4.2mW 的情况下，与单个 20 厘米长的极化光纤相比，转换效率最大增加了 5.5 倍，对应转换效率为 5.4%。对于任何考虑的基频功率，五段器件输出的转换效率都大于具有相同长度的单个极化光纤的效率。
