Open AccessSimplified phase-stable dual-comb interferometer for short dynamic range distance measurement
Author(s) -
Siyu Zhou,
Shoumei Xiong,
Zebin Zhu,
Guanhao Wu
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.022868
Subject(s) - interferometry , optics , jitter , interference (communication) , dynamic range , phase noise , signal (programming language) , phase (matter) , physics , range (aeronautics) , accuracy and precision , materials science , computer science , telecommunications , channel (broadcasting) , quantum mechanics , composite material , programming language
A simplified phase-stable dual-comb interferometer for absolute distance measurement within a short dynamic range is proposed in this paper. The experimental results demonstrate that stable phase-difference information and lower timing jitter can be obtained within a time delay of 2000 ns between the reference interference signal and measurement interference signal. Using the proposed technique, the time-of-flight (TOF) result can link directly to the carrier-wave interferometric (CWI) result in an average time of 20 ms and can reach 2 nm precision in 0.5 s averaging time. Millimeter-scale measurement dynamic range and nanometer-level precision can thus be achieved without additional noise suppression. This method can also be applied at different stand-off distances.