Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 20, Issue 5-8, Pages 416-418Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2008.916929
Keywords
large deformation; optical fiber sensor; polymer optical fiber (POF)
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We demonstrate the measurement of the phase shift in a polymethylmethacrylate single-mode optical fiber interferometer, operating at a wavelength of 632.8 nm, up to 15.8% nominal strain in the fiber. The phase-displacement sensitivity is measured to be 1.39 x 10 7 rad . m(-1) for this strain range. This strain range is well beyond the yield strain of the polymer fiber and that previously measured for polymer Bragg gratings and silica optical fiber sensors.
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