Next Article in Journal
Measurements and Modelling of Base Station Power Consumption under Real Traffic Loads
Next Article in Special Issue
Fiber Optic Sensor for Acoustic Detection of Partial Discharges in Oil-Paper Insulated Electrical Systems
Previous Article in Journal
Underwater Wireless Sensor Communications in the 2.4 GHz ISM Frequency Band
Previous Article in Special Issue
Optical Fiber Networks for Remote Fiber Optic Sensors
Sensors 2012, 12(4), 4265-4280; doi:10.3390/s120404265

Parametric Study of the Reflective Periodic Grating for In-Plane Displacement Measurement Using Optical Fibers

1 Department of Aerospace Engineering, KAIST, 335 Gwahangno, Yuseong-gu, Daejeon 305-701, Korea 2 Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, 172 Gongneung 2-dong, Nowon-gu, Seoul 139-743, Korea
* Author to whom correspondence should be addressed.
Received: 18 January 2012 / Revised: 7 March 2012 / Accepted: 26 March 2012 / Published: 28 March 2012
(This article belongs to the Special Issue Optical Fiber Sensors 2012)
View Full-Text   |   Download PDF [1358 KB, uploaded 21 June 2014]   |   Browse Figures


This paper presents a technique for a simple sensing principle that can be used for the measurement of displacement. The proposed sensor head is composed of a reflective grating panel and an optical fiber as a transceiver. The simplified layout contributes to resolving the issues of space restraints during installation and complex cabling problems in transmission fiber optic sensors. In order to verify the effectiveness of the proposed technique, it is important to obtain the sinusoidal signal reflected from the grating for reasonable phase tracking. In the numerical analysis, a real wave based optical beam model is proposed for the extraction of predicted signal according to the grating width and ratio of reflection bar width to spacing. The grating pattern design to obtain a sine wave reflected sensor signal was determined within an R-square value of 0.98 after sine curve fitting analysis. Consequently, the proposed sensor principle achieved the in-plane displacement measurement with a maximum accuracy error of 5.34 µm.
Keywords: optical fiber; sinusoidal signal; one-way displacement; grating pattern optical fiber; sinusoidal signal; one-way displacement; grating pattern
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Share & Cite This Article

Further Mendeley | CiteULike
Export to BibTeX |
EndNote |
MDPI and ACS Style

Lee, Y.-G.; Kim, D.-H.; Kim, C.-G. Parametric Study of the Reflective Periodic Grating for In-Plane Displacement Measurement Using Optical Fibers. Sensors 2012, 12, 4265-4280.

View more citation formats

Related Articles

Article Metrics

For more information on the journal, click here


[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert