Institute of Photonics and Optical Science (IPOS), School of Physics, University of Sydney, Sydney, New South Wales 2006, Australia.
Opt Lett. 2011 Jan 15;36(2):298-300. doi: 10.1364/OL.36.000298.
We demonstrate on-chip all-optical pulse erasure based on four-wave mixing and cross-phase modulation in a dispersion engineered chalcogenide (As(2)S(3)) rib waveguide. We achieve an erasure efficiency of ~15 dB for picosecond pulses in good agreement with numerical simulations using the nonlinear Schrödinger equation. The combined effect of the high instantaneous optical nonlinearity (γ = 9900 (W km)(-1)) and small group-velocity dispersion (D = 29 ps/nm km), which reduces pulse walk-off, will enable all-optical pulse erasure for ultrafast signal processing.
我们在基于啁啾光纤光栅的掺铒光纤环形镜中实现了基于四波混频和交叉相位调制的全光光脉冲擦除，得到了 15dB 的消光比，与基于非线性薛定谔方程的数值模拟结果吻合较好。高的非线性系数γ=9900（W·km）（-1）和小的群速度色散 D=29 ps/nm·km 共同作用，减小了脉冲的走离，将为超快信号处理实现全光光脉冲擦除。
