In this paper, we experimentally demonstrate flexible wavelength conversion, in which the input signals can be freely converted to output wavelengths through widely and arbitrarily tuning the pump wavelength within a broad second harmonic (SH) bandwidth up to 25 nm. The scheme is based on the cascaded chi (2) process in a 20-mm periodically poled MgO-doped LiNbO(3) (PPMgLN). Also, wavelength broadcasting can be performed by simultaneous use of multiple pumps with wavelengths located in the broad SH bandwidth.
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Zhang et al. (2008) studied this question.