Subwavelength Position Sensing Using Nonlinear Feedback and Wave Chaos

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2011-12-16

Authors

Cohen, Seth D
Cavalcante, Hugo
Gauthier, Daniel J

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Abstract

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 =10 000 and a two-dimensional resolution of =300, where is the shortest wavelength of the illuminating source.

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Published Version (Please cite this version)

10.1103/PhysRevLett.107.254103

Publication Info

Cohen, Seth D, Hugo Cavalcante and Daniel J Gauthier (2011). Subwavelength Position Sensing Using Nonlinear Feedback and Wave Chaos. 10.1103/PhysRevLett.107.254103 Retrieved from https://hdl.handle.net/10161/5101.

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