No abstract

Abstract-Gain control by means of pump compensation in cascades of erbium-doped fiber amplifiers (EDFA's) is analyzed. Based on analytical expressions for the 1-dB rise/fall time for the case of channels add/drop, required pump power changes at each amplifier are derived in the form of simple closed expressions. Numerical simulations of a system comprising 20 wavelengthdivision-multiplexed channels transmitted through a cascade of 35 EDFA's are performed demonstrating the effectiveness of the gain control.

Abstract-We show that doped-fiber amplifiers operated in saturation can display very fast transient dynamics and large power swings in a packet switching environment with highly variable packet interarrival times.

Ref er en ces minimum phase channel H2(z). Hardware offsets and quantisation errors may cause performance degradation.

No abstract