Er-concentration/minimum pump power optimization technique for design of broadband single link using Er-doped dispersion compensating optical amplifiers

Abstract

A design of broadband (C-band and L-band) link for dense wavelength division multiplexing (DWDM) system employing Er-doped dispersion compensating optical fiber amplifier is presented using a procedure based on the optimization of Er-concentration with minimum pump power requirement in the optical fiber. The design has been done using simple step index fiber at a pump wavelength of 980 nm. For 45 km of link-length only one pumping scheme has been used. With the channel separation of 50 GHz, a wide band has been obtained for bit rate above 10 Gb/sec. The procedure and results are useful for designing dispersion-less communication fiber link along with amplification.