We could easily map the strain profile along a long gauge FBG by applying Fourier transform with a sliding window to the signal from the OFDR system. We evaluated the spatial resolution theoretically and experimentally.
© 2006 Institute of Electronics, Information and Communication Engineers
(050.0050) Diffraction and gratings : Diffraction and gratings
(050.1950) Diffraction and gratings : Diffraction gratings
(070.0070) Fourier optics and signal processing : Fourier optics and signal processing
(070.6020) Fourier optics and signal processing : Continuous optical signal processing
H. Murayama, H. Igawa, K. Kageyama, K. Ohta, I. Ohsawa, K. Uzawa, M. Kanai, T. Kasai, and I. Yamaguchi, "Distributed Strain Measurement with High Spatial Resolution Using Fiber Bragg Gratings and Optical Frequency Domain Reflectometry," in Optical Fiber Sensors, OSA Technical Digest (CD) (Optical Society of America, 2006), paper ThE40.
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