[1] Chou M H,Brener I,Fejer M M,et al.1.5μm-band wavelength conversion based on cascaded second-order nonlinear susceptibility in LiNbO3 waveguides[J].IEEE Pho.Tech.Lett,1999,11:653-655.
[2] Ishizuki H,Suhara T,Fujimura M,et al.Wavelength-conversion type picosecond optical switching using awaveguide QPM-SHG/DFG device[J].Opt.Quantum Electron,2001,33:953-961.
[3] Sun J,Yuan X,Liu D.Tunable wavelength conversion between picosecond pulses using cascaded second-order nonlinearity in LiNbO3 waveguides[J].Appl.Phys.B,2005,80:681-685.
[4] Sun J,Liu W,Tian J.Multchannel wavelength conversion exploiting cascaded second-order nonlinearity in LiNbO3 waveguides[J].IEEE Pho.Tech.Lett,2003,15:1743-1745.
[5] Luo Chuanhong,Sun Junqiang,Wang Jian.Comparison of Two Wavelength Conversion Schemes by Exploiting Cascaded Harmonic and Difference Frequency Generation in PPLN[J].Microwave and Optical Technology Letters,2007,49:905-910.
[6] Chen B,Xu C Q.Analysis of novel cascaded SFG+DFG wavelength conversions in quasi-phase-matched waveguides[J].IEEE J.Quantum Electron,2004,40:256-261.
[7] Wang Jian,Sun Junqiang,Luo Chuanhong,et al.Experimental demonstration of wavelength conversion between ps-pulses based on cascaded sum-and difference frequency generation(SFG+DFG)in LiNbO3 waveguides[J].Optics Express,2005,13:7405-7414.
[8] Wang Jian,Sun Junqiang,Luo Chuanhong,et al.Flexible all-optical wavelength conversions of 1.57-ps pnlses exploiting cascaded sum and difference frequency generation (cSFG/DFG)in a PPLN waveguide[J].Appl.Phys.B,2006,83:543-548.
[9] Yu Song,Gu Wanyi.Wavelength Conversions in Quasi-Phase Matched LiNbO3 Waveguide Based on Double-Pass Cascaded SFG+DFG Interactions[J].IEEE J.Quantum Electron,2004,40:1548-1554.