The virtually-imaged phased array (VIPA) is a side-entrance etalon with potential application as a high-resolution spectral disperser for wavelength division multiplexing. Here we present an approximate analytical spectral dispersion law for the VIPA, which we confirm experimentally.

In this Letter we demonstrate high-speed direct space-to-time pulse shaping with waveform reconfigurations down to the order of 1 ns. Our pulse shaper implementation incorporates a modified arrayed-waveguide grating structure and an array of optoelectronic reflection modulators.

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