Tailoring supercontinuum generation using highly nonlinear photonic crystal fiber

This paper discusses about the tailoring supercontinuum (SC) generation based on a highly nonlinear germanium (Ge) doped photonic crystal fiber (HNL-GePCF) with all normal group velocity dispersion (GVD). Using finite element method (FEM) with a circular perfectly matched boundary layer (PML), it is shown through simulations that how simply the center wavelength can be shifted from one center point to another after optimizing at a particular wavelength using the proposed HNL-GePCF. Moreover, SC spectra at 1.06, 1.31 and 1.55 mu m have been generated using picosecond optical pulses produced from relatively less expensive laser sources. (C) 2012 Elsevier Ltd. All rights reserved.