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This paper presents a theoretical and experimental investigation of opticalsignal regeneration properties of a non-linear optical loop mirror using asemiconductor optical amplifier as the active element (SOA-NOLM). While thisdevice has been extensively studied for optical time division demultiplexing(OTDM) and wavelength conversion applications, our proposed approach, based ona reflective configuration, has not yet been investigated, particularly in thelight of signal regeneration. The impact on the transfer function shape ofdifferent parameters, like SOA position in the interferometer and SOA inputoptical powers, are numerically studied to appreciate the regenerativecapabilities of the device.Regenerative performances in association with a dualstage of SOA to create a 3R regenerator which preserves the data polarity andthe wavelength are experimentally assessed. Thanks to this completeregenerative function, a 100.000 km error free transmission has experimentallybeen achieved at 10 Gb/s in a recirculating loop. The evolution of Bit ErrorRate for multiple pass into the regenerator and the polarization insensitivitydemonstration to input data are presented.

SOA - NOLM in Reflective Configuration for Optical Regeneration in High Bit Rate Transmission Systems