Key laboratory for Micro/Nano Optoelectronic Devices of Ministry of Education, College of Computer Science and Electronic Engineering, Hunan University, Changsha 410082, China.
College of Physics and Electronics, Hunan University, Changsha 410082, China.
Sci Rep. 2017 Jan 4;7:39926. doi: 10.1038/srep39926.
Optical rogue waves are featured as the generation of high amplitude events at low probability in optical systems. Moreover, the formation of optical rogue waves is unpredictable and transient in photonic crystal fibers. In this paper, we put forward a method to generate high-intensity optical rogue waves in a more controlled way based on induced modulation instability, which can suppress the noise effect and hence play a leading role in the process of pulse evolution. Our numerical simulations indicate that the generation of rogue wave can be controlled when seeding at the optimal modulation frequency and the intensity of rogue wave can be enhanced with appropriate modulation depth. Further, high-intensity rogue wave can also be ejected in the fiber with a shorter propagation length by regulating the modulation depth. These results all provide a better understanding of optical rogue wave, which can contribute to the generation of tunable long-wavelength spectral components and selective excitation of mid-infrared supercontinuum.
光学孤子波的特点是在光学系统中以低概率产生高强度事件。此外，光子晶体光纤中光学孤子波的形成是不可预测的和瞬态的。在本文中，我们提出了一种基于诱导调制不稳定性的方法，以更可控的方式产生高强度光学孤子波，该方法可以抑制噪声效应，从而在脉冲演化过程中起主导作用。我们的数值模拟表明，在最优调制频率下进行种子注入时，可以控制孤子波的产生，并且通过适当的调制深度可以增强孤子波的强度。此外，通过调节调制深度，也可以在较短的光纤传输长度中产生高强度孤子波。这些结果都为光学孤子波的产生提供了更好的理解，有助于产生可调谐的长波长光谱分量和中红外超连续谱的选择性激发。
