Analysis of dispersion properties in hexagonal hollow fiber

A hollow fiber with new cross section is studied by means of a numerical simulator for modal analysis based on the finite-difference time-domain method (FDTD). Results show that light can be confined into the core area due to six right angles of the hexagonal glass with high index, and the peak intensity is located in the low-index air region. Distribution of the transverse electric-field intensity as well as dispersion properties of the fundamental mode are given.