Growing 1D and quasi-2D unstable manifolds of maps
Journal of Computational Physics
Collocation Methods for the Computation of Periodic Solutions of Delay Differential Equations
SIAM Journal on Scientific Computing
Computing unstable manifolds of periodic orbits in delay differential equations
Journal of Computational Physics
Pseudospectra and delay differential equations
Journal of Computational and Applied Mathematics
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In this paper we present a new numerical technique for computing the unstable eigenfunctions of a saddle periodic orbit in a delay differential equation. This is used to obtain the necessary starting data for an established algorithm for computing one-dimensional (1D) unstable manifolds of an associated saddle fixed point of a suitable Poincaré map. To illustrate our method, we investigate an intermittent transition to chaos in a delay system describing a semiconductor laser subject to phase-conjugate feedback.