Real-time space/time processing with femtosecond laser pulses

Utilization of ultrahigh bandwidth available in optical fiber networks will require development of fast and efficient parallel-to-serial and serial-to-parallel all- optical multiplexing techniques. Such multiplexers are also useful for interfacing to optical storage devices. In this presentation we will review the application of space/time optical processing with femtosecond laser pulse to implement such multiplexers. We will focus on a novel real time optical space-time processor based on 3-wave mixing in a nonlinear optical crystal. This processor allows conversion of temporal signal sequence to a 1D spatial image, thereby realizing a serial-to-parallel multiplexer. The processor is also used to generate a wigner distribution function, which allows to determine both amplitude and phase of ultrashort temporal signals.

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