title: Manipulating dispersive wave generation by anomalous self-steepening effect in metamaterials.
abstract: We present a theoretical investigation of dispersive wave (DW) generation in nonlinear metamaterials (MMs). The role of the anomalous self-steepening (SS) effect, which can be either positive or negative, and the negative SS parameter can have a very large value compared to an ordinary positive-index material, in DW generation is particularly identified. It is demonstrated that the SS effect exerts a great impact on the peak power while has little effect on the frequency shift of DW. For positive third-order dispersion (TOD), the negative SS broadens the pulse spectrum and weakens the DW's peak power significantly, opposite to the case of positive SS. For negative TOD, however, the negative SS narrows the pulse spectrum and enhances the DW's peak power, also opposite to the case of positive SS. The results suggest that the DW generation in nonlinear MMs can be manipulated by SS effect to a large extent.
authors.affiliation: Key Laboratory for Micro-/Nano-Optoelectronic Devices of Ministry of Education, College of Physics and Microelectronic Science, Hunan University, Changsha 410082, China. xiangyuanjiang@126.com
authors.forename: Yuanjiang
authors.initials: Y
authors.lastname: Xiang
authors.forename: Jipeng
authors.initials: J
authors.lastname: Wu
authors.forename: Xiaoyu
authors.initials: X
authors.lastname: Dai
authors.forename: Shuangchun
authors.initials: S
authors.lastname: Wen
authors.forename: Jun
authors.initials: J
authors.lastname: Guo
authors.forename: Qingkai
authors.initials: Q
authors.lastname: Wang
mesh_terms: D017076:Computer-Aided Design; D004867:Equipment Design; D005336:Fiber Optic Technology / Q000295:instrumentation*; D006801:Humans; D008029:Lighting / Q000295:instrumentation*; D008962:Models, Theoretical