耗散光子弹的碰撞特性及其在全光逻辑中的应用-物理电子学专业论文.docxVIP

II Abstract Optical soliton communication, a novel communication technology, is based on the theory of nonlinear optics and uses optical soliton as information carrier. Soliton maintaining both its amplitude and width at the same time to keep fine long-distance transmission characteristics, has been acknowledged to be the preferential choice for the next generation of ultra-high-speed and large-capacity all optical network. In addition, study of optical soliton have attracted a great number of researchers to involve in because of its wide range of applications, such as in all-optical logic and switching devices, optical data storage, aiding laser cooling by optical trapping of particles and so on. In recent years, with the rapid development of the research, it is recognized that many new optical devices need a set of the balance mechanism between energy loss and energy supplement which is different from solitons in Hamiltonian system. The classic theory for optical solitons needs to be improved and then a new theory for dissipative solitons has come into being. The spatial-temporal soliton in 3D dissipative optical systems usually called dissipative optical bullet (DOB). The DOB is more similar to physical particles than any other solitons in 1D and 2D system and their collision properties make them ideal for building large-scale digital optical switches and optical logic circuits, which is of great significance for its applications in all-optical high-speed communications network and next-generation optical computer. In this paper, we use split step Fourier method to study the collisions between two DOBs in the dissipative system, results are listed below: First, we studied both the head-on and the non-head-on collisions between two stable DOBs to show influence of the geometrical relationship in the initial conditions on the final results. Collision results demonstrated a lot of physical phenomena, including the fusion, fission and quasi-elastic collision characte