All-Optical Toggle Flip-Flop Based on Monolithic Semiconductor Ring Laser

optical bistability; optical logic; optical saturable absorption; ring lasers; semiconductor lasers; bit rate 500 Mbit/s; carrier recovery time; directional bistability; monolithic all-optical flip-flop; monolithic semiconductor ring laser; reverse-biased input waveguides; saturable absorption effect; Flip-flops; Logic gates; Optical feedback; Optical fibers; Optical pulses; Optical flip-flop; all-optical signal processing; optical computing; semiconductor laser; semiconductor ring laser