Sensitivity enhancement of fiber Bragg gratings to transverse stress by using microstructural fibers |
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Authors: | Jewart Charles Chen Kevin P McMillen Ben Bails Michael M Levitan Steven P Canning John Avdeev Ilya V |
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Affiliation: | Department of Electrical and Computer Engineering, University of Pittsburgh, 3700 O'Hara Street, Pittsburgh, Pennsylvania 15261, USA. |
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Abstract: | We present simulation and experimental results of fiber Bragg grating responses to transverse stress in microstructure fibers. The grating wavelength shifts and peak splits are studied as a function of external load and fiber orientation. Both simulation and measurement results indicate that the sensitivity of grating sensors to the transverse stress can be enhanced by a factor of eight in a two-hole fiber over that in a standard fiber. |
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