Evanescent-field gas sensing in photonic crystal fiber containing plasma material by finite difference method

Abstract

Herein, a new design of hexagonal photonic crystal fiber containing core made of the highly nonlinear material like lead silicate (SF57) and holes of cladding filled with plasma material has been reported for the highly sensitive vibrational detection of various gases. We have adopted finite difference approach to carry out the effect of nonlinear waves in the presence of plasma. With this approach, it may alternatively be perfect to obtain the solution of semi-vectorial wave equation through 2-dimensional discretization of coordinate space. This type of PCF which is suitable for obtaining the flattened dispersion with low effective area for high signal intensity, allows the accurate detection of multiplexed gas molecules. © 2017 American Scientific Publishers All rights reserved.