  In this paper, a new class of optical fibers is studied, i.e. microstructured
fibers or photonic crystal fibers (PCF). The main objective is to characterize
these fibers using different dispersion diagrams and present an interface that
enables calculation of various transverse indexes. The choice of these profiles
was guided by a simplification achievement. Furthermore, in order to acquire
expertise in air-silica microstructured fibers, a behavior modeling of these
particular structures is proposed in this paper in order to present an
analytical method based on empirical equations. The fibers treated in this
paper have a triangular arrangement of holes corresponding to the natural
arrangement of a bundle of cylindrical tubes around a central rod of the same
diameter.
