Impact of two-photon absorption on self-phase modulation in silicon waveguides
Impact of two-photon absorption on self-phase modulation in silicon waveguides
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DOI：
10.1364/ol.32.002031
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发表时间：
2007-07-15
期刊：
影响因子：
3.6
通讯作者：
Agrawal, Govind P.
中科院分区：
文献类型：
--
作者：
Yin, Lianghong;Agrawal, Govind P.
我们研究了双光子吸收对硅波导自相位调制（SPM）过程的影响，同时包括自由载流子吸收和自由载流子色散。给出了生成载流子密度较低情况下的解析解；它对于估计低重复率脉冲的光谱带宽很有用。对自由载流子效应进行了数值研究，重点是它们对非线性相移和光谱展宽的作用。我们还考虑脉冲序列的重复率如何影响 SPM 过程。 (c) 2007 年美国光学学会。
We study the effects of two-photon absorption on the self-phase modulation (SPM) process in silicon waveguides while including both free-carrier absorption and free-carrier dispersion. An analytical solution is provided in the case in which the density of generated carriers is relatively low; it is useful for estimating spectral bandwidth of pulses at low repetition rates. The free-carrier effects are studied numerically with emphasis on their role on the nonlinear phase shift and spectral broadening. We also consider how the repetition rate of a pulse train affects the SPM process. (c) 2007 Optical Society of America.