Share Email Print
cover

Optical Engineering

Transmissive grating-reflective mirror-based fiber optic accelerometer for stable signal acquisition in industrial applications
Author(s): Yeongwan Lee; Chun-Gon Kim; Dae-Hyun Kim
Format Member Price Non-Member Price
PDF $20.00 $25.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

This paper discusses an applicable fiber-optic accelerometer composed of a transmissive grating panel, a reflection mirror, and two optical fibers with a separation of quarter grating pitch as transceivers that monitor the low-frequency accelerations of civil engineering structures. This sensor structure brings together the advantages of both a simple sensor structure, which leads to simplified cable design by 50% in comparison with the conventional transmission-type fiber optic accelerometer, and a stable reflected signals acquisition with repeatability in comparison to the researched grating-reflection type fiber optic accelerometer. The vibrating displacement and sinusoidal acceleration measured from the proposed fiber optic sensor demonstrated good agreement with those of a commercial laser displacement sensor and a MEMS accelerometer without electromagnetic interference. The developed fiber optic accelerometer can be used in frequency ranges below 4.0 Hz with a margin of error that is less than 5% and a high sensitivity of 5.06 rad/(m/s)2.

Paper Details

Date Published: 4 May 2012
PDF: 9 pages
Opt. Eng. 51(5) 054402 doi: 10.1117/1.OE.51.5.054402
Published in: Optical Engineering Volume 51, Issue 5
Show Author Affiliations
Yeongwan Lee, KAIST (Korea, Republic of)
Chun-Gon Kim, KAIST (Korea, Republic of)
Dae-Hyun Kim, Seoul National Univ. of Science and Technology (Korea, Republic of)


© SPIE. Terms of Use
Back to Top