Abstract

From the angle of sensitivity of the long period fiber grating (LPFG) resonant transmission spectrum, we demonstrate the sensitivity of LPFG resonance peak amplitude changing with transverse loads. The design of a resonant peak modulation-based LPFG rebar corrosion sensor is described by combining the spectral characteristics of LPFG with the expansion state monitoring of rebar corrosion. LPFG spectrum curves corresponding with different rebar corrosion status of the environment under test are captured by the monitoring technique of LPFG transmission spectra, and the relationship between the resonance peak amplitude change and the state of rebar corrosion is obtained, that is, the variation of LPFG resonance peak amplitude increases with the intensifying of the degree of rebar corrosion. The experimental results numerically show that the sensor response has good regularity for a wide range of travel.

© 2013 Optical Society of America

Asymmetric transverse-load characteristics and polarization dependence of long-period fiber gratings written by a focused CO₂ laser

Yiping Wang, Dong Ning Wang, Wei Jin, and Yunjiang Rao
Appl. Opt. 46(16) 3079-3086 (2007)

Reflective long-period fiber grating-based sensor with Sagnac fiber loop mirror for simultaneous measurement of refractive index and temperature

Jianying Yuan, Chun-Liu Zhao, Yumeng Zhou, Xiangdong Yu, Juan Kang, Jianfeng Wang, and Shangzhong Jin
Appl. Opt. 53(29) H85-H90 (2014)

Strain measurement in a concrete beam by use of the Brillouin-scattering-based distributed fiber sensor with single-mode fibers embedded in glass fiber reinforced polymer rods and bonded to steel reinforcing bars

Xiaodong Zeng, Xiaoyi Bao, Chia Yee Chhoa, Theodore W. Bremner, Anthony W. Brown, Michael D. DeMerchant, Graham Ferrier, Alexander L. Kalamkarov, and Anastasis V. Georgiades
Appl. Opt. 41(24) 5105-5114 (2002)

Refractometric sensor based on a phase-shifted long-period fiber grating

Rosane Falate, Orlando Frazão, Gaspar Rego, José Luís Fabris, and José Luís Santos
Appl. Opt. 45(21) 5066-5072 (2006)

High-frequency fiber Bragg gating accelerometer and strain sensor-based blast test on a concrete slab

Ke Jiang, Lei Liang, Shu Dai, Hui Wang, Zhiyuan Song, and Chen Li
Appl. Opt. 61(2) 554-562 (2022)