Four-wave mixing in slow light engineered silicon photonic crystal waveguides
Four-wave mixing in slow light engineered silicon photonic crystal waveguides
复制标题
DOI：
10.1364/oe.18.022915
复制
发表时间：
2010-10-25
期刊：
影响因子：
3.8
通讯作者：
Krauss, T. F.
中科院分区：
文献类型：
--
作者：
Monat, C.;Ebnali-Heidari, M.;Krauss, T. F.
实验研究了短（80 μ m）色散工程慢光硅光子晶体波导中的四波混频。泵浦、探测和闲频信号都位于14 nm宽的低色散区，群速度接近恒定，为c/30。在峰值泵浦功率为1 W，泵浦-探测失谐量为6 nm的条件下，我们测得闲频光和连续波探测光之间的瞬时转换效率高达-9dB。发现这种转换效率比具有十倍大的群速度的Si纳米线的转换效率高得多（>10倍）。此外，我们估计的FWM带宽至少是平带慢光窗口。这些结果，数值模拟的支持下，强调工程的重要性，利用慢光增强FWM效率的PHC波导的色散，即使是短的设备长度。(C)2010年美国光学学会
We experimentally investigate four-wave mixing (FWM) in short (80 mu m) dispersion-engineered slow light silicon photonic crystal waveguides. The pump, probe and idler signals all lie in a 14 nm wide low dispersion region with a near-constant group velocity of c/30. We measure an instantaneous conversion efficiency of up to -9dB between the idler and the continuous-wave probe, with 1W peak pump power and 6nm pump-probe detuning. This conversion efficiency is found to be considerably higher (>10 x) than that of a Si nanowire with a group velocity ten times larger. In addition, we estimate the FWM bandwidth to be at least that of the flat band slow light window. These results, supported by numerical simulations, emphasize the importance of engineering the dispersion of PhC waveguides to exploit the slow light enhancement of FWM efficiency, even for short device lengths. (C) 2010 Optical Society of America