Zhang Lin, Lin Qiang, Yue Yang, Yan Yan, Beausoleil Raymond G, Willner Alan E
Department of Electrical Engineering, University of Southern California, Los Angeles, California 90089, USA.
Opt Express. 2012 Jan 16;20(2):1685-90. doi: 10.1364/OE.20.001685.
We propose a novel silicon waveguide that exhibits four zero-dispersion wavelengths for the first time, to the best of our knowledge, with a flattened dispersion over a 670-nm bandwidth. This holds a great potential for exploration of new nonlinear effects and achievement of ultra-broadband signal processing on a silicon chip. As an example, we show that an octave-spanning supercontinuum assisted by dispersive wave generation can be obtained in silicon, over a wavelength range from 1217 to 2451 nm, almost from bandgap wavelength to half-bandgap wavelength. Input pulse is greatly compressed to 10 fs.
据我们所知，我们首次提出了一种新型硅波导，它具有四个零色散波长，在670纳米带宽上具有平坦的色散。这为探索新的非线性效应以及在硅芯片上实现超宽带信号处理具有巨大潜力。例如，我们表明，通过色散波产生辅助，可以在硅中获得跨越倍频程的超连续谱，波长范围从1217纳米到2451纳米，几乎从带隙波长到半带隙波长。输入脉冲被大幅压缩至10飞秒。
