Mithun De, Indranil Mondal and Amit Kumar Das, Global Institute of Management and Technology, India

Erbium doped fiber amplifiers (EDFAs) are the essential components of a highly efficient, long distance optical data link.Their design has been refined to give better performance parameters. A novel design approach for erbium-doped fiber amplifiers is proposed based on Matlab and Fortran 77 Programming.In this paper, a combination of fiber intensity distribution, pump and signal power, optimum length and maximum gain are taken into account as objective function and the results are presented for different core radius, fiber length, pump power and signal power. Dispersion compensating fibers (DCFs) which possess negative dispersion coefficient equal to or greater than this 17ps/km-nm can be used to overcome this drawback. In order to upgrade the present long haul fiber optic communication system, comprising of CSFs, a combination of EDFAs and DCFs would be the most feasible choice to compensate the dispersion as well as the loss.

Dispersion Compensating Fiber, Dispersion Shifted Fiber, Erbium Doped Fiber Amplifier, Scalar Wave equation of Core profile, Pump power and Signal Power.