Mechanically induced long-period fiber grating array sensor

✍ Scribed by Namkwon Lee; Jaewon Song; Jaehee Park

• Publisher: John Wiley and Sons
• Year: 2011
• Tongue: English
• Weight: 599 KB
• Volume: 53
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.26289

✦ Synopsis

Abstract

This article presents the experimental characterization of a mechanically induced long‐period fiber grating (MLPFG) array sensor for measuring the amplitude and width of an applied weight as well as detecting its position. The MLPFG array sensor consists of an optical fiber placed between a rubber cover and a 45‐cm‐long metal bar with round grooves on its upper surface divided into 10 different grating periods. The grating periods are sequentially increased by 10 μm from 690 to 780 μm, and the number of grooves per grating period is 60. Experimental results show that the MLPFG array sensor can be used for measuring the amplitude of an applied weight from the optical attenuation at the resonance wavelength, measuring the loading width from the full width at half maximum of the dip, and detecting the position of the applied weight from the resonance wavelength. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2295–2298, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26289