Precision judgment criteria and supplement data processing method in high-precision ranging with dual-comb lasers

Qian Zhou; Yang Li; Kai Ni; Mingfei Xu; Hao Dong; Guanhao Wu

doi:10.1117/12.2072017

13 November 2014 Precision judgment criteria and supplement data processing method in high-precision ranging with dual-comb lasers

Qian Zhou, Yang Li, Kai Ni, Mingfei Xu, Hao Dong, Guanhao Wu

Author Affiliations +

Proceedings Volume 9276, Optical Metrology and Inspection for Industrial Applications III; 92761W (2014) https://doi.org/10.1117/12.2072017
Event: SPIE/COS Photonics Asia, 2014, Beijing, China

Abstract

A method using a pair of femtosecond frequency combs can realize ranging at a high precision of 1μm by Fourier Processing. In simulation of this system based on Matlab/Simulink, it is found that the choosing of repeating frequencies has great impact on frequency of the sampled signals, which influences the ranging precision a lot. The sampled signals are analyzed and classified into three types, which can be judgment criteria in system setting. Filter at Nyquist frequency is advised to decrease the edge effect of FFT, and a supplement means of cutting in data processing is proposed to improve precision.

Citation Download Citation

Qian Zhou, Yang Li, Kai Ni, Mingfei Xu, Hao Dong, and Guanhao Wu "Precision judgment criteria and supplement data processing method in high-precision ranging with dual-comb lasers", Proc. SPIE 9276, Optical Metrology and Inspection for Industrial Applications III, 92761W (13 November 2014); https://doi.org/10.1117/12.2072017

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