Study of cross-phase modulation and free-carrier dispersion in silicon photonic wires for Mamyshev signal regenerators.
Study of cross-phase modulation and free-carrier dispersion in silicon photonic wires for Mamyshev signal regenerators.
复制标题
Mamyshev 信号再生器硅光子线中交叉相位调制和自由载流子色散的研究。
作者：
H. Hsieh;K. Feng;Ming
报道了在硅光子线上实现马米雪夫信号再生的数值研究。与采用交叉相位调制的光纤马米雪夫再生器不同，硅光子导线必须包括双光子吸收和双光子吸收诱导的自由载流子效应。通过很好地调整同传信号和时钟脉冲之间的时延，交叉相位调制和自由载流子色散都可以引起非线性波长漂移，这对于Mami shev再生方案中的信号恢复是必不可少的。仿真结果表明，对于脉冲宽度为10ps、峰值功率为6.5W、工作速度为10Gbit/S的归零信号，通过1 cm硅光线，信号眼图的品质因数提高了4d B以上。
A numerical study on Mamyshev signal regeneration realized on silicon photonic wires is reported. Unlike fiber-optics Mamyshev regenerators employing cross-phase modulation, silicon photonic wires have to include two-photon absorption and the two-photon-absorption-induced free-carrier effect. By well adjusting time delay between the co-propagating signal and clock pulses, both cross-phase modulation and free-carrier dispersion could induce nonlinear wavelength shift, which is essential for signal recovery in the Mamyshev regeneration scheme. A simulation result shows the quality factor of signal eye diagram improved by more than 4 dB for Return-to-Zero signals with pulse width 10 ps, peak power 6.5 W, and operation speed 10 Gbit/s through a 1-cm silicon photonic wire.