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2025 ; 4
(1
): 179
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Programmable low-coherence wavefronts for enhanced localization
#MMPMID41102448
Bilgin B
; Liao JC
; Chen HT
; Chang CC
; Addamane S
; Lilly MP
; Mittleman DM
; Knightly EW
Commun Eng
2025[Oct]; 4
(1
): 179
PMID41102448
show ga
Engineering the properties of electromagnetic wavefronts has become essential to
imaging, wireless security, sensing, and wireless communication. In particular,
wavefronts that exhibit low spatial coherence can enable sensing functionalities
with high accuracy and low latency. The typical use of such wavefronts cannot
take advantage of these possibilities, as they require the ability to dynamically
reconfigure the wavefront in a controllable and repeatable fashion, over a broad
spectral bandwidth. Here, we propose a new approach for generating broadband
reconfigurable wavefronts which not only exhibit low spatial coherence at a
particular frequency, but are also decorrelated with the wavefronts
simultaneously generated at other frequencies. We demonstrate that this
frequency-domain decorrelation is a key feature that, in combination with dynamic
reconfigurability, enables localization measurements with an order-of-magnitude
improvement in accuracy compared to the state of the art.