Multiplexed Bragg grating laser sensors for civil engineering

Raymond M. Measures; A. Tino Alavie; Robert Maaskant; Myo Myint Ohn; Shawn E. Karr; Shang Yuan Huang; Derek J. Glennie; C. Wade; A. Guha-Thakurta; Gamil Tadros; Sami Rizkalla

doi:10.1117/12.165922

30 December 1993 Multiplexed Bragg grating laser sensors for civil engineering

Raymond M. Measures, A. Tino Alavie, Robert Maaskant, Myo Myint Ohn, Shawn E. Karr, Shang Yuan Huang, Derek J. Glennie, C. Wade, A. Guha-Thakurta, Gamil Tadros, Sami Rizkalla

Author Affiliations +

Proceedings Volume 2071, Distributed and Multiplexed Fiber Optic Sensors III; (1993) https://doi.org/10.1117/12.165922
Event: Optical Tools for Manufacturing and Advanced Automation, 1993, Boston, MA, United States

Abstract

A portable, rugged, and compact 4-channel Bragg grating fiber laser sensor demodulation system was developed for interrogating an array of 20-intracore Bragg grating sensors that we embedded within several of the concrete girders used to support the deck of a new two span road in Calgary, Alberta. Another unique feature of this bridge is that two types of Carbon fiber based composite prestressing tendons are being tested in a number of the concrete girders. We have instrumented five of the approximately 60 ft long concrete girders with fiber optic Bragg grating strain and temperature sensors in order to monitor the loads on these girders and their response during the construction of the bridge and subsequently over an extended period of time.

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Raymond M. Measures, A. Tino Alavie, Robert Maaskant, Myo Myint Ohn, Shawn E. Karr, Shang Yuan Huang, Derek J. Glennie, C. Wade, A. Guha-Thakurta, Gamil Tadros, and Sami Rizkalla "Multiplexed Bragg grating laser sensors for civil engineering", Proc. SPIE 2071, Distributed and Multiplexed Fiber Optic Sensors III, (30 December 1993); https://doi.org/10.1117/12.165922

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