ALL-OPTICAL FLIP-FLOP

摘要

PROBLEM TO BE SOLVED: To provide a set-reset flip-flop which operates all-optically. SOLUTION: Set light is inputted from a setting port 321. Then a multimode interference part 31 of a waveguide 30 oscillates only in set mode. Consequently, an uninverted output Q can be obtained from an uninverted output port 331. This state lasts even after the set light input is ceased. Then reset light is inputted from a resetting port 322. Then the multimode interference part 31 stops oscillating in the set mode and oscillates in reset mode. Consequently, an inverted output Q can be obtained from an inverted output port 332. This state lasts even after the reset light input is ceased.