Optical trapping with modified exponential decay in optical waveguides via dressed continuum

Abstract

Simultaneous interaction of two side-coupled waveguides with the dressed continuum represented by a linear waveguide array causes cross-coupling between the two evanescent decay-channels and results in the phenomenon of trapping of the light field in the spatial domain during propagation through the waveguide system. For specific parameter values, it has been shown that the trapping effect is possible for all relative positions of the waveguides side-coupled to the dressed continuum. The model also demonstrates non-exponential decay characteristics of the optical field amplitudes in the waveguides. Depending on the values of the propagation mismatch, the nonlinearity arising in the decay-rate characteristics exhibits features like optical Zeno and anti-Zeno effects.

Keywords:

• optical waveguide system
• continuum state
• optical trapping
• non-exponential decay
• optical analog
• Zeno effect
• anti-Zeno effect

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Corrigenda

Acknowledgements

The authors would like to thank E. Paspalakis (Materials Science Department, School of Natural Sciences, University of Patras, Patras, Greece) and S. Longhi (Dipartimento di Fisica and Istituto di Fotonica e Nanotecnologie del Consiglio Nazionale delle Ricerche, Politecnico di Milano, Milano, Italy) for their valuable suggestions in the preparation of manuscript.