Zou Zhixin, Liu Jinmei, Zhang Liang, Wang Zhiqiang, Zhan Li
Opt Express. 2015 Nov 16;23(23):29584-91. doi: 10.1364/OE.23.029584.
We theoretically propose and experimentally demonstrate an approach to achieve temporal manipulation of light propagation via cross-intensity modulation (XIM) effect in an unbalanced fiber Mach-Zehnder interferometer (MZI). By changing the optical loss indices (which can also be gain indices theoretically) discrepantly in the two branches of the MZI, we can obtain the largest time shifts at the minima of the transmission frequency spectrum, while there shows no time shifts at the maxima. This scheme provides a flexibility of ultra-wide bandwidth operation both on optical wavelength and modulation frequency.
我们从理论上提出并通过实验证明了一种在不平衡光纤马赫-曾德尔干涉仪（MZI）中通过交叉强度调制（XIM）效应实现光传播时间操纵的方法。通过在MZI的两个分支中不同地改变光损耗指数（理论上也可以是增益指数），我们可以在传输频谱的最小值处获得最大的时间偏移，而在最大值处则没有时间偏移。该方案在光波长和调制频率上都提供了超宽带宽操作的灵活性。
