Gain dynamics of doped-fiber amplifiers for added and dropped signals

Author

Bononi, Alberto ; Rusch, Leslie A.

Author_Institution

Dipt. di Ingegneria dell´´Inf., Parma Univ., Italy

Volume

2

fYear

1998

fDate

7-11 Jun 1998

Firstpage

911

Abstract

Sun et al. (see Electron. Lett., vol.32, p.1490-91, Aug. 1996) reduced the set of coupled first order nonlinear partial differential equations determining the wavelength-dependent, time-varying doped-fiber amplifier gain into a single ordinary differential equation (ODE). In this paper we further simplify the ODE, greatly enhancing its utility as an analysis and design tool. We find that the gain dynamics are completely specified by the total number of excited ions. We demonstrate that channel addition causes much faster transients than channel dropping in wavelength division multiplexing networks. We approximate the solution of the ODE by an exponential with the time constant given as a function of the amplifier parameters

Keywords

differential equations; erbium; fibre lasers; optical communication equipment; optical fibre networks; wavelength division multiplexing; EDFA; ODE; added signals; amplifier parameters; channel addition; channel dropping; coupled first order nonlinear PDE; dropped signals; erbium doped-fiber amplifiers; excited ions; exponential; gain dynamics; ordinary differential equation; partial differential equations; time constant; time-varying amplifier gain; transients; wavelength division multiplexing networks; wavelength-dependent gain; Couplings; Differential equations; Doped fiber amplifiers; Partial differential equations; Power amplifiers; Reservoirs; Signal processing; Steady-state; Sun; Wavelength division multiplexing;

fLanguage

English

Publisher

ieee

Conference_Titel

Communications, 1998. ICC 98. Conference Record. 1998 IEEE International Conference on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-4788-9

Type

conf

DOI

10.1109/ICC.1998.685144

Filename

685144