非均匀耗散效应对空间光孤子影响的研究

Dissipative effect exists in many dissipative systems, such as Ginzburg-Landau system, reaction-diffusion system and Swift-Hohenberg system. It provides optical wave viscous force, nonlinear gain and gain saturation ect., which strongly effects optical wave propagation. Our project will adopt numerical calculation and theoretical analysis approach. Focus on the Ginzburg-Landau system to study spatial optical soliton by using spatially inhomogeneous dissipative effect. We mainly analyze effect of periodic and nonperiodic dissipative effect strengthen, structure, period and width on soliton propagation. We will reveal that stability, surface state, drift motion, interaction between solitons and vortices from one-dimensional to three-dimensional cases and from fundamental to high-order states. Our results will be general and important because the Ginzburg-Landau system exists widely in many physical branches, including optics, superconductor, plasmas and Bose-Einstein condensate. Our project will provide the theoretical and technical supports for the potential application in all-optical routing, all-optical switches and photonic computer.

耗散系统存在于光学、超导、等离子体和Bose-Einstein凝聚等物理领域，耗散系统中存在的耗散效应对光波的传输会产生粘滞力、非线性增益和增益饱和等作用，从而影响光束的传输特性。. 本项目采用理论分析与数值计算作为研究手段，建立金兹堡-朗道耗散空间光孤子传输的新型模型；提供非均匀耗散效应与折射率调制之间相互作用对孤子传输影响的新方法，重点分析周期性和非周期性耗散效应的强度、结构、周期和宽度等因素对空间光孤子的影响，揭示从一维到三维、从基态到高阶的耗散空间光孤子的稳定性、表面态特性、横向移动性、相互作用性和漩涡性等特性，阐明非均匀耗散效应控制空间光孤子的机制；实现利用非均匀耗散效应有效操纵孤子传输的目的。本项目的研究成果对揭示空间孤子在各种耗散系统中的传输规律有重要意义，为研究光孤子在全光路由、光开关和光子计算机等领域中的潜在应用提供理论和技术支持。