Remote Vector Velocimetry with Fiber-Delivered Scalar Fields (Laser Photonics Rev. 19(3)/2025)

Abstract

Velocity Detection

In article number 2401302, Jian Wang and co-workers propose a remote vector velocimeter based on spatially structured amplitude fields for monitoring the angular velocities of objects. A 40-km multi-core fiber creates and delivers the structured light fields by adjustable mode excitation in the outer cores; the signals reflected by the target are collected and transmitted back by the inner core, thus enabling the remote measurement with a transceiver-integration configuration.