Sensing properties of femtosecond laser-inscribed long period gratings in photonic crystal fiber

Kyriacos Kalli, Thomas D.P. Allsop, Kaiming Zhou, Graham Smith, Michael Komodromos, David J. Webb, Ian Bennion

Research output: Contribution to journalArticle


The use of near infrared, high intensity femtosecond laser pulses for the inscription of long period fiber gratings in photonic crystal fiber is reported. The formation of grating structures in photonic crystal fiber is complicated by the fiber structure that allows wave-guidance but that impairs and scatters the femtosecond inscription beam. The effects of symmetric and asymmetric femtosecond laser inscriptions are compared and the polarization characteristics of long period gratings and their responses to external perturbations are reported.
Original languageEnglish
Pages (from-to)228-233
Number of pages6
JournalPhotonic Sensors
Issue number3
Early online date19 Feb 2011
Publication statusPublished - Sep 2011


Bibliographical note

© The Author(s) 2011
This article is published under license to BioMed Central Ltd. Open Access This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.


  • fiber gratings
  • femtosecond laser inscription
  • photonic crystal fiber

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