Ultrafast all optical switching in two wavelength amplifying nonlinear optical loop mirror

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Abstract
An ultrafast optical switch is described based on optical pulse switching in a nonlinear loop mirror incorporating an erbium doped fibre amplifier. Semiconductor laser diodes are used throughout, emphasising the practical applicability of this device. A 10 bit/s pulse stream comprising 20 ps pulses is modulated by a −7.4dBm, 10 Gbit/s NRZ optical data stream.