A multimode integrated optical bistable switch using a LiNbO(3) phase modulator in a noncavity configuration was constructed and tested. Bistability and discriminator operation were observed in this device using a He-Ne laser.
Bistable optical devices have been suggested for a number of applications (switching, optical memory, binary logic, discrimination, amplifications, clipping, limiting and pulse shaping) in optical signal processing and communication system. Recently, several integrated optical bistable devices have been made available. Most of them have performed by using LiNb03 as electrooptical waveguide modulator. A review of integrated bistable devices based on waveguide optical modulators is presented under this paper.