Phase Modulated Coherently Coupled Orbital Angular Momentum for FMCW Ranging and Velocimetry | Zendy

Evan Robertson | Zendy; Jaxon Wiley | Zendy; Tyler Cramer | Zendy; J. Keith Miller | Zendy; Eric G. Johnson | Zendy

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Phase Modulated Coherently Coupled Orbital Angular Momentum for FMCW Ranging and Velocimetry

Author(s) -

Evan Robertson,

Jaxon Wiley,

Tyler Cramer,

J. Keith Miller,

Eric G. Johnson

Publication year - 2025

Publication title -

ieee photonics technology letters

Language(s) - English

Resource type - Magazines

SCImago Journal Rank - 0.81

H-Index - 157

eISSN - 1941-0174

pISSN - 1041-1135

DOI - 10.1109/lpt.2025.3576653

Subject(s) - engineered materials, dielectrics and plasmas , photonics and electrooptics

This work presents a method of structured light ranging that utilizes a relative phase modulation between two orthogonal beams. Application of a linear frequency modulated (LFM) signal in the relative phase between two Orbital Angular Momentum (OAM) states within a coherently coupled OAM (CCOAM) beam provides a ranging technique that achieves 21.7 mm resolution and removes the need for optical mixing. Results are provided for different distances, distributed targets, and estimation of target velocity.

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