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Averaged nonlinear equations for multimode fibers valid in all regimes of random linear coupling

机译:多模光纤的平均非线性方程在随机线性耦合的所有状态下均有效

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摘要

We develop averaged equations to model nonlinear propagation in multimode fibers that are valid in all regimes of random, linear, intermodal coupling. The propagation equations apply to the three existing regimes of linear coupling-the two previously studied all-mode (strong) and mode-group (weak) couplings and the new intermediate coupling regime. The equations are therefore general and can describe nonlinear propagation for all types of intermodal linear coupling that can exist between modes in a fiber supporting multiple spatial modes. Numerical simulations are performed to validate the new averaged propagation equations in the nonlinear regime.
机译:我们开发了平均方程来模拟在多模光纤中的非线性传播,该方程在随机,线性,联运耦合的所有状态下均有效。传播方程适用于线性耦合的三个现有机制-先前研究的两个全模式(强)耦合和模式组(弱)耦合以及新的中间耦合机制。因此,这些方程式是通用的,可以描述支持多空间模态的光纤中的模态之间存在的所有类型的模态线性耦合的非线性传播。进行数值模拟以验证非线性状态下新的平均传播方程。

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