Discretizing light behaviour in linear and nonlinear waveguide lattices

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Nonlinear multimodal interference and saturable absorption using a short graded-index multimode optical fiber (2013, neutral): “crimination in an SA is the value of (∂τ/∂˜γ), which characterizes the sensitivity of an SA to a change in the pulse power. In Fig. 15, we plot (δτ/τ) deﬁned as (δτ/τ) = 1 τ � τ|˜γ=0 .001 −τ|˜γ=0 � , (22) as a function of the normalized GIMF length. We note that we are using (δτ/τ) as the metric bec”
Discrete breathers — Advances in theory and applications (2008, background): “Coupled optical waveguides form periodical structures in one and two dimensions [64,136,216].”
Exciton-polaritons in lattices: A non-linear photonic simulator (2016, background): “Celebrated examples of simulators include lattices of microwave cavities [16–18], coupled optical parametric oscillators [19] and microlasers [20], and arrays of coupled waveguides arranged both in one and two dimensions [21].”
Hybrid photonic-crystal fiber (2017, background): “22 optics” was first introduced by Christodoulides et al. dealing with all devices with more than two coupled waveguides (Christodoulides and Joseph, 1988), which were mostly linearly arranged (Christodoulides et al., 2003; Vieweg, 2012).”
On the existence of homoclinic solutions of a class of discrete nonlinear periodic systems (2010, background): “And the experimental observations of two-dimensional discrete solitons have been reported in [5,10,11,16].”