Numerical Modeling of Guided Mode for Negative Curvature Hollow-core Fibers

Abstract

In this paper, we analyze the guided-mode properties of negative curvature hollow-core fibers (NCHCFs) using a new algorithm derived from the vector boundary element method (VBEM). We present a numerical analysis of NCHCFs for core-diameter ratios from 0.46 to 0.64 and eight-capillary cladding. It is found that the guided mode is effectively limited to within the hollow core when the core-diameter ratio is 0.51 to 0.62, enabling the core to confine the transmission power without leakage.