Title :
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
fDate :
5/1/2001 12:00:00 AM
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;
Journal_Title :
Lightwave Technology, Journal of
