Fiber Grating Strain Sensors

  • Eric Udd
  • Whitten Schulz
  • Katy Davol
  • Marley Kunzler


The need to measure strain occurs in a variety of industries, ranging from aerospace design to civil engineering to traffic sensors to robotic manipulators. Measuring the deflection of a structure gives design engineers data needed to build safer and more efficient systems. Typical measurements can be approximately an inch of deflection over a 100 foot gage length (8 millistrain) for structural applications, to a micron of deflection over a meter gage (1 microstrain) for materials testing. Strain measurements are made along one, two, or three spatial axes, depending on the need.


Axial Strain Fiber Bragg Grating Strain Sensor Transverse Strain Optical Spectrum Analyzer 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. 1.
    D. Inaudi, “Photonic Sensing Technology in Civil Engineering Applications,” Handbook of Optical Fibre Sensing Technology, J.M. Lopez-Higuera, Ed., pp. 519, John Wiley & Sons Ltd, West Sussex, England (2002).Google Scholar
  2. 2.
    E. Udd, “An Overview of Fiber-Optic Sensors,” Review of Scientific Instruments, 66 (8), 4015–5030 (1995).ADSCrossRefGoogle Scholar
  3. 3.
    S. M. Sze, “Classification and Terminology of Sensors,” Semiconductor Sensors, S. M. Sze, Ed., pp 1–15, John Wiley & Sons Ltd, New York (1994).Google Scholar
  4. 4.
    R. Kashyap and J.M. Lopez-Higuera, “Fiber Grating Technology: Theory, Photosensitivity, Fabrication and Characterization,” Handbook of Optical Fibre Sensing Technology, J.M. Lopez-Higuera, Ed., pp. 350–377, John Wiley & Sons Ltd, West Sussex, England (2002).Google Scholar
  5. 5.
    W.L. Schulz, E. Udd, J.M. Seim, H.M. Laylor, G.E. McGill, “Single and Multiaxis Fiber Grating Based Strain Sensors for Civil Structure Applications,” Proc. SPIE 3489, 71 (1998).ADSCrossRefGoogle Scholar
  6. 6.
    W.L. Schulz, J.P. Conte, E. Udd, “Long Gage Fiber Optic Bragg Grating Strain Sensors to Monitor Civil Structures,” Proc. SPIE 4330, 71 (2001).Google Scholar
  7. 7.
    E. Udd, W.L. Schulz, J. Seim, J. Corones, H.M. Laylor, “Fiber Optic Sensor for Infrastructure Applications,” #FHWA-OR-RD-98–18 (1990).Google Scholar
  8. 8.
    J. Seim, W.L. Schulz, E. Udd, M. Morrell, “ Higher Speed Demodulation of Fiber Grating Sensors,” Proc. SPIE 3670, 8 (1999).ADSCrossRefGoogle Scholar
  9. 9.
    E. Udd, W.L. Schulz, J.M. Seim, E. Haugse, A. Trego, P.E. Johnson, T.E. Bennett, D.V. Nelson, A. Makino, “Multidimensional Strain Field Measurements using Fiber Optic Grating Sensors,” Proc. SPIE 3986, 254 (2000).ADSCrossRefGoogle Scholar
  10. 10.
    D.V. Nelson, A. Makino, C. Lawrence, J. Seim, W. Schulz, E. Udd, “Determination of the K-Matrix for the Multi-parameter Fiber Grating Sensor in AD072 Fibercore Fiber,” Proc. SPIE 3489, 79 (1998).ADSCrossRefGoogle Scholar
  11. 11.
    W.L. Schulz, E. Udd, J.M. Seim, A. Trego, I.M. Perez, “Progress on Monitoring of Adhesive Joints using Multiaxis Fiber Grating Sensors,” Proc. SPIE 3991, 52 (2000).ADSCrossRefGoogle Scholar
  12. 12.
    E.J. Lang and T-W. Chou, The Effect of Strain Gage Size on Measurement Errors in Textile Composite Materials, Composites Science and Technology, 58 (1998).Google Scholar
  13. 13.
    C. Black, E. Udd, W.L. Schulz, S. Kreger, M. Kunzler, T. Taylor, R. Lumsden, “Using Multi-Axis Fiber Grating Strain Sensors to Measure Transverse Strain and Transverse Strain Gradients in Composite Materials with Complex Weave Structures,” Proc. SPIE 4694, 162 (2002).ADSCrossRefGoogle Scholar
  14. 14.
    J. Seim, E. Udd, W.L. Schulz, M. Morrell, H.M. Laylor, “Health Monitoring of an Oregon Historical Bridge with Fiber Grating Strain Sensors,” Proc. SPIE 3671, 128 (1999).ADSCrossRefGoogle Scholar
  15. 15.
    W.L. Schulz, J. Seim, E. Udd, M. Morrell, H.M. Laylor, G.E. McGill, R. Edgar, “Traffic Monitoring/Control and Road Condition Monitoring using Fiber Optic Based Systems,” Proc. SPIE 3671,109 (1999).ADSCrossRefGoogle Scholar
  16. 16.
    M. Kunzler, R. Edgar, E. Udd, T. Taylor, W.L. Schulz, W. Kunzler, S. Soltesz, “Fiber Grating Traffic Monitoring Systems,” Proc. SPIE 4696, (2002).Google Scholar

Copyright information

© Springer Science+Business Media New York 2003

Authors and Affiliations

  • Eric Udd
    • 1
  • Whitten Schulz
    • 1
  • Katy Davol
    • 1
  • Marley Kunzler
    • 1
  1. 1.Blue Road ResearchUSA

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