Title :
Transient gain dynamics in saturated counter-pumped Raman amplifiers
Author_Institution :
Dipt. di Ingegneria dell´Informazione, Universita degli Studi di Parma, Italy
Abstract :
Transient gain dynamics in doped-fiber amplifiers have been studied intensively in connection with sudden channel addition or removal caused by either unintentional failures, or by deliberate network reconfigurations. The main concern here is in the duration of the power transients, which may induce temporary performance degradation, and the amount of power surges, which may damage the optical components and cause system disruption. In this paper, we show that the gain dynamics are completely determined by the time behavior of a single state variable, namely the relative pump change sensed by the signals.
Keywords :
Raman lasers; optical communication equipment; optical fibre amplifiers; optical pumping; optical saturation; telecommunication channels; telecommunication network reliability; transients; deliberate network reconfigurations; doped-fiber amplifiers; gain dynamics; power surges; power transients; saturated counter-pumped Raman amplifiers; signal sensed relative pump change; single state variable; sudden channel addition; sudden channel removal; temporary performance; time behavior; transient gain dynamics; unintentional failures; Degradation; Doped fiber amplifiers; Equations; Nonlinear filters; Optical amplifiers; Performance gain; Power amplifiers; Raman scattering; Semiconductor optical amplifiers; Stimulated emission;
Conference_Titel :
Optical Fiber Communication Conference and Exhibit, 2002. OFC 2002
Print_ISBN :
1-55752-701-6
DOI :
10.1109/OFC.2002.1036521
