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arXiv · 1401.2299

Quasi PT-symmetry in passive photonic lattices

Marco Ornigotti·Alexander Szameit
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Abstract

The concept of quasi-PT symmetry in optical wave guiding system is elaborated by comparing the evolution dynamics of a PT-symmetric directional coupler and a passive directional coupler. In particular we show that in the low loss regime, apart for an overall exponentially damping factor that can be compensated via a dynamical renormalization of the power flow in the system along the propagation direction, the dynamics of the passive coupler fully reproduce the one of the PT-symmetric system.

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Marco Ornigotti, Alexander Szameit. 2014-01-16. Quasi PT-symmetry in passive photonic lattices. https://doi.org/10.1088/2040-8978%2F16%2F6%2F065501

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