Absolute Distance Measurement Using Frequency Comb and a Single-Frequency Laser

Author

Hanzhong Wu ; Fumin Zhang ; Fei Meng ; Balling, Petr ; Jianshuang Li ; Liang Pan ; Xinghua Qu

Author_Institution

State Key Lab. of Precision Meas. Technol. & Instrum., Tianjin Univ., Tianjin, China

Volume

27

Issue

24

fYear

2015

Firstpage

2587

Lastpage

2590

Abstract

We propose, here, a multi-heterodyne method using frequency comb and a tunable laser for absolute distance measurement. Numerous beat frequency components can be obtained in RF region. The distance can be determined via the phases of the beat signals. We potentially extend the non-ambiguity range up to 105 m by adjusting the comb repetition frequency slightly. The experimental results show an agreement within 4.5 μm, corresponding to a relative precision of 1.5 × 10^-7 in a range up to 30 m, compared with an incremental distance meter.

Keywords

distance measurement; laser tuning; measurement by laser beam; optical frequency combs; RF region; absolute distance measurement; beat frequency components; beat signals; comb repetition frequency; frequency comb; multiheterodyne method; single-frequency laser; tunable laser; Distance measurement; Frequency measurement; Measurement by laser beam; Optical interferometry; Phase measurement; Uncertainty; Wavelength measurement; Absolute distance measurement; Frequency comb; Frequency comb;; absolute distance measurement; interferometry;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/LPT.2015.2478783

Filename

7274326