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In this article, an optical fiber was designed with zerodispersion at wavelength of (1.3 m). The design took into consideration many factors of the fiber, such as; fiber crosssection, fiber material, refractive index. These factor can affect the operation of a fiber in optical communication system. A zerodispersion fiber was obtained when the core was doped by (1.3%) of GeO2. Implementing the package of computer aided design (OptiFiber 2.0). We were able to attain the optimum values for refractive index core and clad as (1.48 and 1.45) respectively, i.e, a percentage difference of (0.02) for radius (6.728 and 8.46) respectively, for zerodispersion at wavelength of (1.3 m) that is use in the optical communication. Design of Zero Dispersion Optical Fiber at Wavelength 1.3 m 55

Design of Zero Dispersion Optical Fiber at Wavelength 1.3 m