Single-mode optical fiber with arbitrary refractive index profile: Propagation solution by the Numerov method

Wide-band dispersion compensating optical fiber

“…The dispersion characteristics of the step index fiber can be obtained directly from [4]- [6] or can be computed by solving the wave equation [3]. The dispersion compensating fiber is assumed to have a chirp-type refractive index profile and is assumed to carry the The profile defined by (1) can generate a variety of mutiply cladded profiles and can be characterized by only five parameters.…”

New equivalent-step-index method for determination Gaussian deviation of single-mode fibers

“…Two of the fibers have the profile shape function f(R)=Rqwith q = 2 and q = 4 respectively. The third one is a W-fiber with rectangular central dip studied in [6], with ratio between core and inner cladding radii u/b = 1/3, dip radius E = 0. l a , ratio between outer clading and core refractive indexes 7 = 0.42424 and ratio between dip and core refractive indexes y= 0.57576. The relative errors in determining of the Gaussian deviation as a function of V/Vc are shown in Fig.…”