2006/09/21 by Hai-Jun Yang, Keith Riles, Sven Nyberg +1
Computer Science · Decision Sciences · Engineering · Physics and Astronomy · #Advanced Measurement and Metrology Techniques #Optical measurement and interference techniques #Scientific Measurement and Uncertainty Evaluation #physics.ins-det #physics.optics
paper · pdf · doi:10.1016/j.nima.2007.02.101
published as Nucl.Instrum.Meth.A575:395-401,2007 · 14 pages, 5 figures, submitted to Applied Optics
arxiv created 2006/09/21 · openalex publication_date 2007/03/08 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
In this paper, we report on new high-precision absolute distance measurements performed with frequency scanned interferometry using a pair of single-mode optical fibers. Absolute distances were determined by counting the interference fringes produced while scanning the frequencies of the two chopped lasers. High-finesse Fabry-Perot interferometers were used to determine frequency changes during scanning. Dual lasers with oppositely scanning directions, combined with a multi-distance-measurement technique previously reported, were used to cancel drift errors and to suppress vibration effects and interference fringe uncertainties. Under realistic conditions, a precision about 0.2 microns was achieved for a distance of 0.41 meters.