Interferometer-less coherent optical range finder

Author

Wang, Chen-Chia ; Trivedi, Sudhir B. ; Jin, Feng ; Khurgin, Jacob ; Temple, Doyle ; Hommerich, Uwe ; Gad, Esam ; Choa, Fow-Sen ; Wu, Yu-Sung ; Corder, Aaron

Author_Institution

Brimrose Corp. of America, Baltimore, MD, USA

Volume

19

Issue

5

fYear

2001

fDate

5/1/2001 12:00:00 AM

Firstpage

666

Lastpage

672

Abstract

A new coherent optical detection technique employing coherent frequency-domain reflectometry and a novel optical frequency sensor is demonstrated for high-precision optical path-length measurements. Using pulsed laser sources, an improvement of more than two orders of magnitude in spatial resolution over conventional optical coherent frequency domain reflectometry techniques is demonstrated. Varying degrees of spatial resolution ranging from several centimeters to a few hundred nanometers are achieved. High-precision distance measurement with long baseline is also presented

Keywords

laser ranging; light coherence; measurement uncertainty; optical sensors; photodiodes; reflectometry; coherent frequency-domain reflectometry; coherent optical detection technique; high-precision distance measurement; high-precision optical path-length measurement; interferometer-less coherent optical range finder; long baseline; optical coherent frequency domain reflectometry techniques; optical frequency sensor; pulsed laser sources; spatial resolution; Biomedical optical imaging; Frequency; High speed optical techniques; Laser beams; Laser modes; Laser radar; Optical interferometry; Optical sensors; Photodiodes; Reflectometry;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/50.923479

Filename

923479