Analysis and Dispersion Engineering for Generation of Ultra-flattened Dispersion in Photonic Crystal Fibers

Abstract

We study the variation of group velocity dispersion with wavelength in photonic crystal fibers having triangular lattice air holes. The first ring of air holes of the fiber is considered to be infiltrated with water-glycerin solution as it is one of the most efficient liquid for photonic crystal fiber infiltration. Concentration of the solution, pitch and diameter of air holes are the parameters we seek to optimize to get flattest dispersion. In our investigation, almost flat and near zero dispersion characteristics is observed when glycerine concentration = 20%, the pitch = 2.3 µm and air hole diameter = 1.9 µm. Our finding will exhibit huge potential advantage in supercontinuum generation and various sensing applications.