Species selective vapour sensing of organic compounds using dual resonant long period fibre gratings with a calixarene coating

S. M. Topliss; S. W. James; F. Davis; S. P. J. Higson; R. P. Tatam

doi:10.1117/12.834707

5 October 2009 Species selective vapour sensing of organic compounds using dual resonant long period fibre gratings with a calixarene coating

S. M. Topliss, S. W. James, F. Davis, S. P. J. Higson, R. P. Tatam

Author Affiliations +

Proceedings Volume 7503, 20th International Conference on Optical Fibre Sensors; 75031I (2009) https://doi.org/10.1117/12.834707
Event: 20th International Conference on Optical Fibre Sensors, 2009, Edinburgh, United Kingdom

Abstract

Species selective vapour sensing has been demonstrated using a coated Long Period Grating with a period and coating thickness that gives rise to a dual resonant response. A calixarene coating with nanostructured features was deposited using the Langmuir-Blodgett technique. A nanoscale cavity in the calixarene molecule adsorbs the analyte molecule causing an increase in the density and thereby the refractive index of the coating. Preliminary vapour sensing experiments were performed and indicate the sensor's selectivity, demonstrating strong responses to toluene and benzene, while exhibiting lower sensitivity to hexane and cyclohexane.

Citation Download Citation

S. M. Topliss, S. W. James, F. Davis, S. P. J. Higson, and R. P. Tatam "Species selective vapour sensing of organic compounds using dual resonant long period fibre gratings with a calixarene coating", Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75031I (5 October 2009); https://doi.org/10.1117/12.834707

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