Fiber optic sensing of magnetic fields utilizing femtosecond laser sculpted microslots and long period gratings coated with Terfenol-D

Graham C.B. Lee, Thomas D.P. Allsop, Changle Wang, Ron Neal, Philip Culverhouse, David J. Webb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Fiber optic sensors are fabricated for detecting static magnetic fields. The sensors consist of a UV inscribed long period grating with two 50 micron long microslots. The microslots are fabricated using the femtosecond laser based inscribe and etch technique. The microslots and the fiber surface are coated with a magnetostrictive material Terfenol-D. A spectral sensitivity of 1.15 pm/mT was measured in transmission with a working resolution of ±0.2 mT for a static magnetic field strength below 10 mT. These devices also present a different response when the spatial orientation of the fiber was adjusted relative to the magnetic field lines.

Original languageEnglish
Title of host publication24th international conference on Optical Fibre Sensors
EditorsHypolito J. Kalinowski, José Luís Fabris, Wojtek J. Bock
Place of PublicationBellingham, WA (US)
PublisherSPIE
Number of pages4
ISBN (Print)978-1-6284-1839-2
DOIs
Publication statusPublished - 8 Sep 2015
Event24th international conference on Optical Fibre Sensors - Curitiba, Brazil
Duration: 28 Sep 20152 Oct 2015

Publication series

NameSPIE proceedings
PublisherSPIE
Volume9634
ISSN (Print)0277-786X

Conference

Conference24th international conference on Optical Fibre Sensors
Abbreviated titleOFS 2015
CountryBrazil
CityCuritiba
Period28/09/152/10/15

Bibliographical note

Graham C. B. Lee ; Tom Allsop ; Changle Wang ; Ron Neal ; Philip Culverhouse and David J. Webb, "Fiber optic sensing of magnetic fields utilizing femtosecond laser sculpted microslots and long period gratings coated with Terfenol-D", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96340K (September 28, 2015).

Copyright 2015 Society of Photo-Optical Instrumentation Engineers. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.

DOI: http://dx.doi.org/10.1117/12.2194325

Keywords

  • etching
  • femtosecond laser
  • long period gratings
  • magnetic sensing
  • optical fibers

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  • Research Output

    • 2 Conference contribution

    Fiber-optic liquid level monitoring system using microstructured polymer fiber Bragg grating array sensors: performance analysis

    Marques, C. A. F., Pospori, A., Sáez-Rodríguez, D., Nielsen, K., Bang, O. & Webb, D. J., 28 Sep 2015, 24th international conference on Optical Fibre Sensors. Bellingham, WA (US): SPIE, 4 p. 96345V. (SPIE proceedings; vol. 9634).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
  • Improved response time of laser etched polymer optical fiber Bragg grating humidity sensor

    Zhang, W., Chen, X., Liu, C., Lu, Y., Cardoso, M. & Webb, D. J., 28 Sep 2015, 24th international conference on Optical Fibre Sensors. Kalinowski, H. J., Fabris, J. L. & Bock, W. J. (eds.). Bellingham, WA (US): SPIE, 4 p. 96343K. (SPIE proceedings; vol. 9634).

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Open Access
    File
  • Cite this

    Lee, G. C. B., Allsop, T. D. P., Wang, C., Neal, R., Culverhouse, P., & Webb, D. J. (2015). Fiber optic sensing of magnetic fields utilizing femtosecond laser sculpted microslots and long period gratings coated with Terfenol-D. In H. J. Kalinowski, J. L. Fabris, & W. J. Bock (Eds.), 24th international conference on Optical Fibre Sensors [96340K] (SPIE proceedings; Vol. 9634). SPIE. https://doi.org/10.1117/12.2194325