Refractive index sensitivity of fibre optic long period gratings with SiO2 nanoparticle based mesoporous coatings

Sergiy Korposh; Seung-Woo Lee; Stephen W. James; Ralph P Tatam

doi:10.1117/12.884777

18 May 2011 Refractive index sensitivity of fibre optic long period gratings with SiO₂ nanoparticle based mesoporous coatings

Sergiy Korposh, Seung-Woo Lee, Stephen W. James, Ralph P Tatam

Author Affiliations +

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 77539A (2011) https://doi.org/10.1117/12.884777
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

A fibre optic long period grating (LPG) with an nano-assembled mesoporous coating of alternate layers of poly (allylamine hydrochloride) (PAH) and SiO₂ nanospheres was used for the development of a fibre-optic refractometer. PAH/SiO₂ films of different thickness have been deposited onto an LPG in order to study the effect of the film thickness on sensor performance. The device showed a sensitivity of 1927 nm/RIU over a RI range of 1.3233-1.4906.

Citation Download Citation

Sergiy Korposh, Seung-Woo Lee, Stephen W. James, and Ralph P Tatam "Refractive index sensitivity of fibre optic long period gratings with SiO₂ nanoparticle based mesoporous coatings", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77539A (18 May 2011); https://doi.org/10.1117/12.884777

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