All-optical switching of picosecond pulses in GaAs MQW waveguides

Patrick LiKamWa; Choong-Bum Park; Alan Miller

doi:10.1117/12.44904

1 September 1991 All-optical switching of picosecond pulses in GaAs MQW waveguides

Patrick LiKamWa, Choong-Bum Park, Alan Miller

Proceedings Volume 1474, Optical Technology for Signal Processing Systems; (1991) https://doi.org/10.1117/12.44904
Event: Orlando '91, 1991, Orlando, FL, United States

Abstract

All-optical switching has been achieved in zero-gap directional couplers containing either a single or multiple quantum wells. The mechanism which is due to free carrier induced refractive nonlinearities at near band-gap resonant frequencies has an instantaneous turn-on time and a recovery time that depends on the speed at which the carriers are dissipated. A recovery time as short as 130 ps has been obtained experimentally by the application of an external dc bias which sweeps out the carriers from the quantum wells.

Citation Download Citation

Patrick LiKamWa, Choong-Bum Park, and Alan Miller "All-optical switching of picosecond pulses in GaAs MQW waveguides", Proc. SPIE 1474, Optical Technology for Signal Processing Systems, (1 September 1991); https://doi.org/10.1117/12.44904

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