Hj. Lee et Cs. Park, All-optical XOR logic gate based on self-phase modulation of a semiconductor optical amplifier without an additional synchronized clock, IEICE TR CO, E84B(2), 2001, pp. 330-332
The authors propose and experimentally demonstrate an ah-optical exclusive
OR (XOR) logic gate based on self-phase modulation (SPM) of a semiconductor
optical amplifier (SOA). The scheme is insensitive to the polarization of
the input signal and requires no additional synchronized clock. The output
of the XOR gate showed the contrast ratio of more than 17dB for the input s
ignal at 2.5 GHz.