Separation of label and payload using FP-SOA

A novel scheme of separating the label and payload with different pulse width by using FP-SOA is proposed in this paper. Due to the facet reflectivity of FP-SOA, the gain is rippled with the variation of carrier density and the opposite characteristics of gain and carrier density appear at either side of the gain peak. Since the different pulse widths deplete different number of carriers, the working region in carrier density shifts adaptively with the pulse width. The wide pulse label extraction can be performed in the region where the gain decreases with the increment of carrier density. The label suppression can be realized in another region where the gain increases with increment of carrier density. The numerical simulation shows that the label extraction with 10.5 dB contrast ratio and the label suppression with 7 dB. The application in 10 Gb/s optical packet switching is discussed. The relationship of the pulse peak gain and pulse width is investigated on considering the impact of the pulse peak power and pulse period.