Remote non-contact vibration and displacement measurement via 3D ellipse fitting

Optics Letters 2026

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Authors: han yang, Yi Jiang, Shangran Xie, Yutong Zhang
DOI: 10.1364/ol.600895
Cited by: 1
References: 17

Abstract

This paper presents a laser interferometric method based on 3D-EFA for high-precision displacement and vibration measurement. Using three DFB lasers (1540.600, 1549.360, and 1558.160 nm) and a dual-cavity EFPI sensor, rapid displacement and remote vibration measurement were demonstrated via a PZT driven by a signal generator. The 3D-EFA algorithm enables stable demodulation with

Fields of Study & Subjects

Optical measurement and interference techniques Structural Health Monitoring Techniques Advanced Measurement and Metrology Techniques

Publication details

Journal / source
Optics Letters
Publisher
Optica Publishing Group
Volume
51
Issue
11
Pages
3196–3196
Publication date
9 May 2026
Language
EN