Impact of potential barriers on soliton spectral tunneling in photonic crystal fiber

Abstract

We report the effect of the potential barriers on soliton spectral tunneling (SST) in photonic crystal fibers (PCFs) with three zero-dispersion wavelengths. Our numerical simulations show that the generation and condition of SST can be well controlled by regulating the potential barrier of the PCFs. Through adjusting the width and position of the potential barrier, we can control the status and location of the switched solitons. In addition, we get the leakage dispersive wave, which may carry energy and information in the specific spectrum range for a short time. We illustrate a new understanding of SST, which may inspire some applications in information security in the near future.