All-optical wavelength selective channel dropping and wavelength conversion in a Ti:PPLN waveguide

摘要

We have demonstrated all-optical wavelength-selective single- and dual-channel dropping and wavelength conversion in a periodically poled Ti:LiNbO_3 waveguide which has two second-harmonic phase-matching peaks by cascaded sum and difference frequency generation (cSFG/DFG). Less than -17 dB of channel dropping extinction ratio was observed with coupled pump power of 325 mW and the wavelength conversion efficiency was measured to be -7 dB with coupled pump power of 233 mW.