Review article
FIBER-OPTIC SENSORS FOR VIBRATION AND STRAIN MEASURING - A REVIEW
Mario Svalina
Pavo Klokoč
; University of Dubrovnik
Nikša Burum
orcid.org/0000-0002-1197-0235
; University of Dubrovnik
Abstract
This article presents a brief overview of fiber-optic sensors and their development in the past 30 years. The new
technologies like FBG or OTDR sensing principles have formed an entirely new generation of sensors. Some of these
sensors, depending on their applications and measurands, have been successfully commercialized and they are
shown in this article.
Also, a multimode fiber optical sensor that measures vibrations, is presented. Multimode fiber has a relatively large
number of modes that travel simultaneously through the fiber and interfere with each other. By applying various
forces upon the fiber, mode’s way of propagation will be changed, consequently their interference distribution will
be changed, therefore generating a different field pattern at the fiber end. Difference in field pattern can be used for
obtaining vibration parameters such as the amplitude and the frequency.
Keywords
fiber-optic system; applications; strain sensing; vibration sensing; BOTDR, FBG
Hrčak ID:
38616
URI
Publication date:
13.6.2009.
Visits: 2.346 *