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Target decoupling in coupled systems resistant to random perturbation.

Sunkyu Yu1, Xianji Piao1, Namkyoo Park2

  • 1Photonic Systems Laboratory, Department of Electrical and Computer Engineering, Seoul National University, Seoul, 08826, Korea.

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|May 21, 2017
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Summary
This summary is machine-generated.

This study introduces a macroscopic approach to design crosstalk-free regions in coupled optical systems, enabling stable decoupling of elements. This method achieves target hiding and overcomes transport blockades in disordered systems.

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Area of Science:

  • Optics and Photonics
  • Wave Phenomena
  • Materials Science

Background:

  • Integrated optical systems often suffer from unwanted crosstalk between elements, hindering precise light flow control.
  • Existing cloaking methods, while effective microscopically, face limitations in practical application to coupled systems due to strict material parameter requirements.
  • Controlling individual elements in coupled optical systems requires advanced decoupling techniques.

Purpose of the Study:

  • To develop a macroscopic approach for designing crosstalk-free regions in coupled optical systems.
  • To achieve stable and independent decoupling of target optical elements from coupled systems.
  • To enable coherent and scattering-free wave transport with controlled spatial profiles, even in disordered systems.

Main Methods:

  • Development of a macroscopic design strategy for crosstalk-free regions.
  • Inverse design of eigenstates to encompass and isolate target elements.
  • Demonstration of decoupling in disordered optical systems, addressing Anderson localization effects.

Main Results:

  • Stable decoupling of optical elements achieved, independent of random alterations in the decoupled region.
  • Coherent and scattering-free wave transport with desired spatial profiles demonstrated.
  • Successful decoupling in disordered systems, overcoming transport blockades.

Conclusions:

  • The developed macroscopic approach offers a robust solution for isolating optical elements within coupled systems.
  • This technique provides a method for "target hiding" of elements, enhancing control in integrated optical devices.
  • The findings pave the way for advanced functionalities in integrated photonics and wave transport.