Subwavelength position sensing using nonlinear feedback and wave chaos.


Journal Article

We demonstrate a position-sensing technique that relies on the inherent sensitivity of chaos, where we illuminate a subwavelength object with a complex structured radio-frequency field generated using wave chaos and nonlinear feedback. We operate the system in a quasiperiodic state and analyze changes in the frequency content of the scalar voltage signal in the feedback loop. This allows us to extract the object's position with a one-dimensional resolution of ~λ/10,000 and a two-dimensional resolution of ~λ/300, where λ is the shortest wavelength of the illuminating source.

Full Text

Cited Authors

  • Cohen, SD; Cavalcante, HLDDS; Gauthier, DJ

Published Date

  • December 16, 2011

Published In

Volume / Issue

  • 107 / 25

Start / End Page

  • 254103 -

PubMed ID

  • 22243079

Pubmed Central ID

  • 22243079

Electronic International Standard Serial Number (EISSN)

  • 1079-7114

International Standard Serial Number (ISSN)

  • 0031-9007

Digital Object Identifier (DOI)

  • 10.1103/physrevlett.107.254103


  • eng