Highly refractive index sensitive femtosecond laser inscribed long period gratings

Edward Davies*, Kyriacos Kalli, Charalambos Koutsides, Lin Zhang

*Corresponding author for this work

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

Abstract

The distinct behaviour of femtosecond laser inscribed long period gratings, with a non-uniform index perturbation within the optical fibre core, has been studied experimentally. The non-uniform laser-induced perturbation results in light coupling from the core mode to a greater number of cladding modes than is the case with their UV laser inscribed counterparts, and this is made evident from the surrounding refractive index (SRI) grating response. Femtosecond inscribed long period gratings are shown to simultaneously couple to multiple sets of cladding modes. A 400μm LPG is shown to result in attenuation peaks that have both blue and red wavelength shifts over a 1250nm to 1700nm wavelength range. This gives rise to SRI sensitivities far greater than anything achievable by monitoring a single attenuation peak. The maximum sensitivity produced by monitoring a single attenuation peak was 1106nm/RIU, whereas monitoring opposing wavelength shifts resulted in a significantly improved sensitivity of 1680nm/RIU.

Original languageEnglish
Title of host publication21st international conference on Optical Fiber Sensors
EditorsWojtek J. Bock, Jacques Albert, Xiaoyi Bao
Place of PublicationBellingham, WA (US)
PublisherSPIE
Number of pages4
ISBN (Print)978-0-8194-8246-4
DOIs
Publication statusPublished - 17 May 2011
Event21st International Conference on Optical Fiber Sensors - Ottawa, ON, Canada
Duration: 15 May 201119 May 2011
http://www.ofs21.org/

Publication series

NameSPIE Proceedings
PublisherSPIE
Volume7753
ISSN (Print)0277-786X

Conference

Conference21st International Conference on Optical Fiber Sensors
Abbreviated titleOFS21
CountryCanada
CityOttawa, ON
Period15/05/1119/05/11
Internet address

Bibliographical note

Edward Davies; Kyriacos Kalli; Charalambos Koutsides and Lin Zhang, "Highly refractive index sensitive femtosecond laser inscribed long period gratings", 21st International Conference on Optical Fiber Sensors, eds. Wojtek J. Bock; Jacques Albert; Xiaoyi Bao, Proc. SPIE 7753, 77539H (2011).

Copyright 2011 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.

http://dx.doi.org/10.1117/12.885993

Keywords

  • femtosecond laser
  • long period grating
  • refractive index

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  • Research Output

    • 9 Conference contribution

    870nm Bragg grating in single mode TOPAS microstructured polymer optical fibre

    Yuan, W., Webb, D. J., Kalli, K., Nielsen, K., Stefani, A., Rasmussen, H. K. & Bang, O., 2011, 21st International Conference on Optical Fiber Sensors. Bock, W. J., Albert, J. & Bao, X. (eds.). SPIE, 4 p. 77538X. (SPIE proceedings; vol. 7753).

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

    Open Access
    File
  • All-fibre twist sensor system based on 45° and 8° tilted fibre gratings

    Yan, Z., Adebayo, A., Zhou, K., Zhang, L. & Webb, D., 17 May 2011, 21st International Conference on Optical Fiber Sensors. Bock, W. J., Albert, J. & Bao, X. (eds.). Bellingham, WA (US): SPIE, 4 p. 77538E. (SPIE Proceedings; vol. 7753).

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

    Open Access
    File
  • Femtosecond laser inscribed superstructure fibre gratings

    Kalli, K., Koutsides, C., Davies, E., Komodromos, M., Webb, D. J. & Zhang, L., 17 May 2011, 21st International Conference on Optical Fiber Sensors. Bock, W. J., Albert, J. & Bao, X. (eds.). Bellingham, WA (US): SPIE, 4 p. 775393. (SPIE Proceedings; vol. 7753).

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

    Open Access
    File
  • Cite this

    Davies, E., Kalli, K., Koutsides, C., & Zhang, L. (2011). Highly refractive index sensitive femtosecond laser inscribed long period gratings. In W. J. Bock, J. Albert, & X. Bao (Eds.), 21st international conference on Optical Fiber Sensors [77539H] (SPIE Proceedings; Vol. 7753). SPIE. https://doi.org/10.1117/12.885993