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

机译:在随机线性耦合的所有制度中有效的多模光纤的平均非线性方程

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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:我们开发平均方程,以在多模光纤中模拟非线性传播,这些传播在随机,线性,交联耦合的所有制度中有效。传播方程适用于线性耦合的三个现有的线性耦合制度 - 前面研究的全模式(强)和模式组(弱)耦合和新的中间耦合状态。因此,该等式将是通用的,并且可以描述用于所有类型的多语构线性耦合的非线性传播,其可以在支持多个空间模式的光纤中的模式之间存在。执行数值模拟以验证非线性制度中的新平均传播方程。

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