Abstract

The modeling, design, simulation, fabrication, calibration, and testing of a three-element, 15.3  cm fiber Bragg grating strain sensor array with the coherent optical frequency domain reflectometry (C-OFDR) interrogation technique are demonstrated. The fiber Bragg grating array (FBGA) is initially simulated using in-house software that incorporates transfer matrices. Compared to the previous techniques used, the transfer matrix method allows a systemwide approach to modeling the FBGA–C-OFDR system. Once designed and simulated, the FBGA system design is then imprinted into the core of a boron–germanium codoped photosensitive fiber using the phase mask technique. A fiber optic Fabry–Perot interferometric (FPI) strain gauge calibrator is then used to determine the strain gauge factor of a single fiber Bragg grating (FBG), and the results are used on the FBGA. The FPI strain gauge calibrator offers nondestructive testing of the FBG. To test the system, the FBGA is then attached to a 75   cm cantilever beam and interrogated using an incremental tunable laser. Electric strain gauges (ESGs) are then used to independently verify the strain measurements with the FBGA at various displacements of the cantilever beam. The results show that the peak strain error is 18% with respect to ESG results. In addition, good agreement is shown between the simulation and the experimental results.

© 2007 Optical Society of America

Full Article  |  PDF Article
Related Articles
State-of-strain evaluation with fiber Bragg grating rosettes: application to discrimination between strain and temperature effects in fiber sensors

Sylvain Magne, Stéphane Rougeault, Manuel Vilela, and Pierre Ferdinand
Appl. Opt. 36(36) 9437-9447 (1997)

Simultaneous measurement of temperature and pressure by a single fiber Bragg grating with a broadened reflection spectrum

Tuan Guo, Xueguang Qiao, Zhenan Jia, Qida Zhao, and Xiaoyi Dong
Appl. Opt. 45(13) 2935-2939 (2006)

In-line short cavity Fabry-Perot strain sensor for quasi distributed measurement utilizing standard OTDR

Edvard Cibula and Denis Donlagic
Opt. Express 15(14) 8719-8730 (2007)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (13)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (27)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription