Study of nonlinear dynamics in silver-nanoparticle-doped photonic crystal fiber

Abstract

Linear and nonlinear properties of silver-nanoparticle-doped photonic crystal fibers (SNPCFs) are explored to obtain exciting nonlinear pulse dynamics. SNPCF offers additional control over the Kerr nonlinearity of the core glass. Unlike traditional PCFs, these composite fibers offer a significantly large negative nonlinearity at lower wavelengths. The interplay between large negative nonlinearity and dispersion leads to interesting dynamics of ultrashort pulse evolution where blueshifted Raman solitons are generated along with phase-matched radiations. Further, it is observed that the numeric sign of self-steepening coefficient provides an additional tool in harnessing the dispersive wave generation.