Discrete Talbot effect in waveguide arrays

Phys Rev Lett. 2005 Jul 29;95(5):053902. doi: 10.1103/PhysRevLett.95.053902. Epub 2005 Jul 25.

Abstract

We report the first observation of discrete Talbot revivals in one-dimensional waveguide arrays. Unlike continuous systems where the Talbot self-imaging effect always occurs irrespective of the pattern period, in discrete configurations this process is only possible for a specific set of periodicities. Recurrence of different input periodic patterns is observed in good agreement with theory.