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Author Gao Zhi Xiao ♦ Fengguo Sun ♦ Zhenguo Lu ♦ Zhiyi Zhang
Source IEEE Xplore Digital Library
Content type Text
Publisher Institute of Electrical and Electronics Engineers, Inc. (IEEE)
File Format PDF
Copyright Year ©2005
Language English
Subject Domain (in DDC) Technology ♦ Engineering & allied operations ♦ Applied physics
Subject Keyword Arrayed waveguide gratings ♦ Sensor arrays ♦ Bragg gratings ♦ Fiber gratings ♦ Monitoring ♦ Robustness ♦ Time measurement ♦ Aerospace engineering ♦ Civil engineering ♦ Thermal sensors
Abstract Multifiber Bragg grating (FBG) sensor arrays are being used in the health monitoring of aerospace structures and civil engineering works, as well as the environment monitoring. However, the field interrogations of multi FBG sensors are still a big challenge due to the lack of portable, robust, high performance multi sensor interrogation devices. We have found that by thermally scanning an arrayed waveguide gratings (AWG) based demultiplexer, a device deployed in the telecommunication networks, multi FBG sensors can be precisely monitored simultaneously. The measurement resolution of this technique can be better than one picometer (equivalent to 0.1degC for temperature sensing) and the measurement time can be as short as milliseconds. Owning to the small size and ruggedness of AWG, it is potentially feasible to fabricate an all solid (no moving parts), palm size, robust and high-resolution interrogator for multi FBG sensor applications
Description Author affiliation: Photonic Syst. Group, Nat. Res. Council, Ottawa, Ont. (Gao Zhi Xiao; Fengguo Sun; Zhenguo Lu; Zhiyi Zhang)
ISBN 0780390563
Educational Role Student ♦ Teacher
Age Range above 22 year
Educational Use Research ♦ Reading
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2005-10-30
Publisher Place USA
Rights Holder Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Size (in Bytes) 247.07 kB
Page Count 3
Starting Page 1104
Ending Page 1106

Source: IEEE Xplore Digital Library