Widely tunable wavelength conversion between picosecond pulses based on Fiber optical parametric amplification

We demonstrate a simple and novel technique for Widely tunable wavelength conversion between picosecond pulses based on fiber optical parametric amplification when the pump pulse with 40-GHz repetition rate and 1.57-ps pulse width is adopted. When the signal wavelength is fixed at 1554.6 nm (near zero-dispersion wavelength of the highly nonlinear dispersion-shifted fiber) to act as the pulsed pump, the converted idler wavelength can be tuned continuously from 1540.6 to 1594.8 nm as the CW laser wavelength is changed from 1514.5 to 1565.7 nm. No obvious changes of the pulse shape and width are found in the converted idler pulses.