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Engineering Fano resonances in discrete arrays

Andrey E. Miroshnichenko and Yuri S. Kivshar

  • Nonlinear Physics Centre and Centre for Ultra-high bandwidth Devices for Optical Systems (CUDOS), Research School of Physical Sciences and Engineering, Australian National University, Canberra ACT 0200, Australia

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Phys. Rev. E 72, 056611 – Published 23 November, 2005

DOI: https://doi.org/10.1103/PhysRevE.72.056611

Abstract

We study transmission properties of discrete arrays composed of a linear waveguide coupled to a system of N side defect states. This simple system can be used to model discrete networks of coupled defect modes in photonic crystals, complex waveguide arrays in two-dimensional nonlinear lattices, and ring-resonator structures. We demonstrate the basic principles of the resonant scattering management through engineering Fano resonances and find exact results for the wave transmission coefficient. We reveal conditions for perfect reflections and transmissions due to either destructive or constructive interferences, and associate them with Fano resonances, also demonstrating how these resonances can be tuned by nonlinear defects.

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Phys. Rev. E 72, 056611– Published 23 November, 2005
  • Received 2 May 2005

© 2005 American Physical Society

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