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Journal of Lightwave Technology

Journal of Lightwave Technology


  • Vol. 25, Iss. 7 — Jul. 1, 2007
  • pp: 1777–1785

Transverse-Stress Fiber Bragg Grating Sensor With High Spatial Resolution and Temperature Stability

R. Joseph Espejo and Shellee D. Dyer

Journal of Lightwave Technology, Vol. 25, Issue 7, pp. 1777-1785 (2007)

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We demonstrate a new method for measuring transverse stress with 10.2-μm spatial resolution in a fiber Bragg grating sensor, without the use of polarization-maintaining fiber, by combining a four-state polarization analysis with a layer-peeling algorithm. Measurements of the externally induced birefringence agree well with predicted values. We also demonstrate that our measurement is insensitive to temperature changes and spatial gradients, making it ideal for nonisothermal applications.

© 2007 IEEE

R. Joseph Espejo and Shellee D. Dyer, "Transverse-Stress Fiber Bragg Grating Sensor With High Spatial Resolution and Temperature Stability," J. Lightwave Technol. 25, 1777-1785 (2007)

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