Yin Lianghong, Lin Qiang, Agrawal Govind P
Institute of Optics, University of Rochester, Rochester, NY 14627, USA.
Opt Lett. 2007 Feb 15;32(4):391-3. doi: 10.1364/ol.32.000391.
We show through numerical simulations that silicon waveguides can be used to create a supercontinuum extending over 400 nm by launching femtosecond pulses as higher-order solitons. The physical process behind continuum generation is related to soliton fission, self-phase modulation, and generation of Cherenkov radiation. In contrast with optical fibers, stimulated Raman scattering plays little role. As low-energy (approximately 1 pJ) pulses and short waveguides (<1 cm) are sufficient for continuum generation, the proposed scheme should prove useful for practical applications.
我们通过数值模拟表明，通过将飞秒脉冲作为高阶孤子发射，硅波导可用于产生延伸超过400纳米的超连续谱。连续谱产生背后的物理过程与孤子裂变、自相位调制以及切伦科夫辐射的产生有关。与光纤不同，受激拉曼散射起的作用很小。由于低能量（约1皮焦）脉冲和短波导（<1厘米）就足以产生连续谱，所提出的方案应证明对实际应用有用。
