Abstract- Losses and dispersion are two main parameters in design of optical fiber transmission medium. All efforts are attempted to reduce these two parameters. By decreasing the core diameter of dispersion shifted fibers at 1550 nm wavelength region, the dispersion will be zero, while the four-wave mixing effect will appear more effectively. One way to decrease the nonlinear effects is to transfer the zero-dispersion wavelength to another wavelength region. In this paper, first we used Optifiber software to transfer the wavelength of zero dispersion of a referenced profile to another wavelength region by changing the refractive index. Then to decrease splice loss and dispersion, the designed refractive index is optimized. The obtained results have been compared with commercial fibers available in the market

Keywords: Dispersion, Loss, Design, Profile

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