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Chirp Reduction in Directly Modulated Multi-Electrode RSOA Devices in Passive Optical Networks

Valicourt, G. ; Pommereau, F. ; Poingt, F. ; Lamponi, M. ; Duan, G. H. ; Violas, M. ; Brenot, R.

IEEE Photonics Technology Letters Vol. 22, Nº 19, pp. 1425 - 1427, October, 2010.

ISSN (print): 1041-1135
ISSN (online): 1041-1135

Journal Impact Factor: 2,110 (in 2014)

Digital Object Identifier: 10.1109/LPT.2010.2062496

Abstract
We demonstrate that the use of an optimized bi-electrode reflective semiconductor optical amplifier as remote modulator reduces the chirp. Our simulation shows that the chirp reduction is due to the carrier density profile in multi-electrode reflective semiconductor optical amplifiers. As a result of the chirp reduction, penalties for transmission are reduced from 6 to 4.5 dB on standard fiber at 2.5 Gb/s over 50 km. Using tri-electrode devices, a penalty of 3 dB is obtained for the same transmission conditions.