Title :
Operational Conditions for Extinction Ratio Improvement in Ultralong SOAs
Author :
Runge, Patrick ; Elschner, Robert ; Bunge, Christian-Alexander ; Petermann, Klaus ; Schlak, Michael ; Brinker, Walter ; Sartorius, Bernd
Author_Institution :
Fachgebiet Hochfrequenztech., Tech. Univ. Berlin, Berlin
Abstract :
The extinction ratio (ER) improvement in ultralong semiconductor optical amplifiers (UL-SOAs) is studied in dependence on their driving conditions. A stable process potentially useful for simple high-speed all-optical regeneration is observed. Furthermore, results indicate that a Bogatov-like effect is the reason for the ER improvement in the UL-SOA´s saturated section.
Keywords :
high-speed optical techniques; optical communication equipment; semiconductor optical amplifiers; Bogatov effect; extinction ratio improvement; high-speed all-optical regeneration; ultralong semiconductor optical amplifiers; Charge carrier density; Charge carrier lifetime; Erbium; Extinction ratio; Gratings; Helium; Optical fiber communication; Optical interferometry; Repeaters; Semiconductor optical amplifiers; All-optical; Bogatov effect; extinction ratio (ER) improvement; ultralong semiconductor optical amplifiers (UL-SOAs);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2008910
