Strategies of precision enhancement for dual-comb time-of-flight distance measurement with nonlinear detection by numerical simulation

Yang Liu; Wenze Xia; Mingzhao He; Shiying Cao; Weilei Yang; Dongjing Miao; Jianshuang Li

doi:10.1117/12.2606092

24 November 2021 Strategies of precision enhancement for dual-comb time-of-flight distance measurement with nonlinear detection by numerical simulation

Yang Liu, Wenze Xia, Mingzhao He, Shiying Cao, Weilei Yang, Dongjing Miao, Jianshuang Li

Author Affiliations +

Proceedings Volume 12065, AOPC 2021: Optical Sensing and Imaging Technology; 120651Z (2021) https://doi.org/10.1117/12.2606092
Event: Applied Optics and Photonics China 2021, 2021, Beijing, China

Abstract

High-precision and long-range absolute distance measurement is a vitally important topic in large-scale metrology, and it has broadened applications in the manufacturing industry. Especially, the dual-comb time-of-ﬂight distance measurement is a promising method combining with the advantages of fast speed and high accuracy. The measurand would be determined by asynchronous optical sampling (ASOPS) methods with a slight diﬀerence in repetition rates. Here, the home-built optical platform of the Er-ﬁber femtosecond frequency combs would be introduced with a repetition rate of around 200 MHz and carrier-envelope oﬀset frequency of 20 MHz. Besides, the strategies of precision enhancement for dual-comb time-of-ﬂight distance measurement with nonlinear intensity detection are discussed by the numerical simulation. The sampling interval could be optimized by choosing a proper range of repetition rate and diﬀerence of repetition rates. A ﬁne curve ﬁtting method is also proposed for further precision improvement. The results of numerical simulation would provide a valuable reference for the experimental process.

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Yang Liu, Wenze Xia, Mingzhao He, Shiying Cao, Weilei Yang, Dongjing Miao, and Jianshuang Li "Strategies of precision enhancement for dual-comb time-of-flight distance measurement with nonlinear detection by numerical simulation", Proc. SPIE 12065, AOPC 2021: Optical Sensing and Imaging Technology, 120651Z (24 November 2021); https://doi.org/10.1117/12.2606092

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KEYWORDS

Distance measurement

Numerical simulations

Frequency combs

Coherence (optics)

Complex systems

Femtosecond phenomena

Interferometry

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