Highly Accurate Compensation Technique for 10-GHz Pulse Intensity Fluctuation Using SPM-Based All-Optical Intensity Limiter

We report a trial of 10-GHz and highly accurate pulse-by-pulse intensity limiting with a single erbium-doped fiber amplifier for low-power-consumption driving optical limiting. A self-phase modulation-based optical limiter with an appropriate pre-chirping made it possible, which provides high limiting accuracy of less than 0.1 dB at a 10-GHz bit rate. The limiting function was tested in a simulation and an experiment for 10-GHz bit sequence with intensity fluctuation. When fed a 1.6-dB sinusoidal intensity modulation at 2 GHz, the experimental setup successfully achieved optical limiting with 0.1-dB accuracy.