Operational Conditions for Extinction Ratio Improvement in Ultralong SOAs

Patrick Runge, Robert Elschner, Christian-Alexander Bunge, Klaus Petermann, Michael Schlak, Walter Brinker, Bernd Sartorius
2009 IEEE Photonics Technology Letters  
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. Index Terms-All-optical, Bogatov effect, extinction ratio (ER) improvement, ultralong semiconductor optical amplifiers (UL-SOAs).
doi:10.1109/lpt.2008.2008910 fatcat:adgfq676arhrpokkbybwddhehy