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Simplified temporal imaging systems for optical waveforms

We demonstrate that temporal imaging (TI) of optical pulses (distortionless compression or expansion of the optical temporal waveform) can be achieved with a system comprising a quadratic phase modulator (time lens) followed by a dispersive device. As compared with the conventional solution, the proposed configuration does not require the use of an input dispersive device preceding the time lens, thus resulting in a much simpler and more practical alternative for implementing TI of optical signals.