Simplified phase-stable dual-comb interferometer for short dynamic range distance measurement | Zendy

Siyu Zhou | Zendy; Shilin Xiong | Zendy; Zebin Zhu | Zendy; Guanhao Wu | Zendy

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Simplified phase-stable dual-comb interferometer for short dynamic range distance measurement

Author(s) -

Siyu Zhou,

Shilin 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.

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