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The interaction between optical solitons is of great significance for studying interaction between light and matter and development of all-optical devices, and is conducive to the design of integrated optical path. Optical soliton interactions for the nonlinear Schr¨odinger equation are investigated to improve the communication quality and system integration. Solutions of the equation are derived and used to analyze the interaction of two solitons.Some suggestions are put forward to weaken their... 相似文献
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恒电流计量电位溶出法测定环境水样中痕量银 总被引:2,自引:0,他引:2
采用玻璃电极-氯化银参比电极-铂对电极三电极系统的恒电流微分计量电溶出分析,在0.1mol.L^-1HNO3-0.05mol.^-1KNO3介质中,银在-0.340V左右呈现良好的氧化溶出峰,用此峰可进行银的微分计时电位溶出分析。在2.5-120μg.L^-1范围内的浓度与峰高呈线性关系,相关系数为0.9992,方法用于环境水样中痕量银的测定,获得满意结果。 相似文献
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This work focuses on chirped solitons in a higher-order nonlinear Schr¨odinger equation, including cubic-quinticseptic nonlinearity, weak nonlocal nonlinearity, self-frequency shift, and self-steepening effect. For the first time,analytical bright and kink solitons, as well as their corresponding chirping, are obtained. The influence of septic nonlinearity and weak nonlocality on the dynamical behaviors of those nonlinearly chirped solitons is thoroughly addressed. The findings of the study give... 相似文献
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自从2004年考纲第一次对考生提出了创新意识的要求以来,创新题型成为了高考命题的新的热点,数列又是创新题型的热点,“数表”问题就是其中一例.创新题型虽然表面比较新颖,但是经过审题后,往往都可以从课本的基本内容中或思想方法上找到影子,关键是要对原有课本基础知识有一定的迁移能力.下面介绍几类由数列所衍生的数阵(数表)问题的处理策略. 相似文献
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We propose a scheme to generate stable vector spatiotemporal solitons through a Rydberg electromagnetically induced transparency(Rydberg-EIT) system. Three-dimensional vector monopole and vortex solitons have been found under three nonlocal degrees. The numerical calculation and analytical solutions indicate that these solitons are generated with low energy and can stably propagate along the axes. The behavior of vector spatiotemporal solitons can be manipulated by the local and nonlocal nonline... 相似文献
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Soliton fusion and fission for the high-order coupled nonlinear Schr?dinger system in fiber lasers 下载免费PDF全文
With the rapid development of communication technology,optical fiber communication has become a key research area in communications.When there are two signals in the optical fiber,the transmission of them can be abstracted as a high-order coupled nonlinear Schr¨odinger system.In this paper,by using the Hirota’s method,we construct the bilinear forms,and study the analytical solution of three solitons in the case of focusing interactions.In addition,by adjusting different wave numbers for phase control,we further discuss the influence of wave numbers on soliton transmissions.It is verified that wave numbers k11,k21,k31,k22,and k32can control the fusion and fission of solitons.The results are beneficial to the study of all-optical switches and fiber lasers in nonlinear optics. 相似文献
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基于集合理论中的同余类概念,给出不定积分的新定义,解决了在原定义下存在的不定积分式间运算意义不明确等问题,使不定积分的定义变得准确合理. 相似文献