Measured sensitivity of arc-induced long-period grating sensors in photonic crystal fibre

Reported are experimental results from investigations of the sensing properties of long-period gratings (LPGs) recorded in two different geometries of photonic crystal fibre (PCF): a large-mode area PCF and an endlessly single mode PCF. The LPGs have been characterised for their sensitivity to tempe...

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Bibliographic Details
Published inOptics communications Vol. 260; no. 1; pp. 184 - 191
Main Authors Dobb, H., Kalli, K., Webb, D.J.
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 01.04.2006
Elsevier Science
Subjects
Crystal
Exact sciences and technology
Fibre
Fundamental areas of phenomenology (including applications)
Gratings
Optical
Optical elements, devices, and systems
Optics
Photonic
Physics
Sensing
Photonic
07.70.D
Optical
Fibre
Sensing
42.81
Crystal
Long-period gratings
Strains
Refractive index
Diffraction gratings
Crystal: Fibre
Microstructured fiber
07.70.D Photonic
Experimental study
Photonics
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Summary:Reported are experimental results from investigations of the sensing properties of long-period gratings (LPGs) recorded in two different geometries of photonic crystal fibre (PCF): a large-mode area PCF and an endlessly single mode PCF. The LPGs have been characterised for their sensitivity to temperature, bending, surrounding index and strain. The LPGs in both fibres have been found to have negligible temperature sensitivity whilst exhibiting useful strain sensitivities. Strong directional bend sensitivity is shown by one PCF whilst the other shows good non-directional bend sensitivity. The fibres exhibit differing sensitivities to surrounding refractive index.
ISSN:0030-4018
1873-0310
DOI:10.1016/j.optcom.2005.10.022