title: Numerical model of wavelength conversion through cross-gain modulation in semiconductor optical amplifiers.
abstract: A steady-state numerical model of wavelength conversion through cross-gain modulation in semiconductor optical amplifiers is described, which includes the spatial variations of the carrier density, gain coefficient, differential gain, and internal loss. Of particular interest is the analytic gain coefficient model, which is applied to the semiconductor optical amplifier converter problem for the first time to our knowledge. The model is used to compare performances of upconverters and downconverters for cases of long and short device lengths, and in large and small signal regimes. Comparisons with results of other studies are presented.
authors.affiliation: School of Electrical and Computer Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332-0250, USA. michael.d.wang@motorola.com
authors.forename: Dong-Xue
authors.initials: DX
authors.lastname: Wang
authors.forename: John A
authors.initials: JA
authors.lastname: Buck
authors.forename: Kevin
authors.initials: K
authors.lastname: Brennan
authors.forename: Ian
authors.initials: I
authors.lastname: Ferguson