A PC-controlled nonincremental distance meter based on a comb-spectrum combined with a frequency-modulated continuous wave interferometer

Author

Rovati, Luigi ; Salvatori, Giorgia ; Bonaiuti, Matteo

Author_Institution

Dept. of Inf. Eng., Univ. of Modena & Reggio Emilia, Italy

Volume

54

Issue

6

fYear

2005

Firstpage

2486

Lastpage

2492

Abstract

In this paper, a PC-controlled nonincremental interferometer that integrates frequency-modulated continuous wave (FMCW) and dispersive comb spectrum (DCS) techniques is presented. This system takes advantage of the wide measuring range of the FMCW technique and of the high resolution of the DCS technique. The system prototype presented in this paper performs measurements over a range of 30 mm with an accuracy of about 600 nm. The proposed combined interferometer is expected to also have applications in biomedical frameworks.

Keywords

distance measurement; light interferometry; semiconductor lasers; PC-controlled nonincremental distance meter; continuous wave interferometer; dispersive comb spectrum; distance measurement; frequency-modulated continuous wave; optical interferometry; optical position measurement; semiconductor laser; Biomedical measurements; Biomedical optical imaging; Dispersion; Distance measurement; Distributed control; Frequency; Laser beams; Optical interferometry; Optical modulation; Performance evaluation; Distance measurement; optical interferometry; optical position measurements; semiconductor lasers; transducers;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2005.858525

Filename

1542556