Bandgap and mode area analysis of all-solid square-lattice photonic bandgap fibers

Abstract

Using the plane-wave expansion method and finite element method, we investigate the properties of all-solid square-lattice photonic bandgap fibers. The comparison of different r/Λ values in the proposed fiber is convenient to optimize the fiber design. The simulation results demonstrate that the effective mode area of all-solid square-lattice photonic bandgap fibers is 1.25 times larger than triangular-lattice ones and the confinement loss of the fibers is no more than 0.1dB/m within the selected bandgap.