Detection of volatile organic compounds using optical fibre long period grating modified with metal organic framework thin films

Jiri Hromadka; Begum Tokay; Sergiy Korposh; Stephen James; Ralph P. Tatam

doi:10.1117/12.2194110

28 September 2015 Detection of volatile organic compounds using optical fibre long period grating modified with metal organic framework thin films

Jiri Hromadka, Begum Tokay, Sergiy Korposh, Stephen James, Ralph P. Tatam

Author Affiliations +

Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 96344N (2015) https://doi.org/10.1117/12.2194110
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil

Abstract

An optical fibre long period grating (LPG) modified with a thin film of ZIF-8, a zeolitic immidazol framework (ZIF) material, a subgroup of the metal organic framework (MOF) family, was employed for the detection of organic vapours. ZIF-8 film was deposited onto the surface of the LPG using an in-situ crystallization technique. The sensing mechanism is based on the measurement of the refractive index (RI) change induced by the penetration of the chemical molecules into the ZIF-8 pores. An LPG modified with 5 growth cycles of ZIF-8 responded to exposure to methanol and ethanol vapours.

Citation Download Citation

Jiri Hromadka, Begum Tokay, Sergiy Korposh, Stephen James, and Ralph P. Tatam "Detection of volatile organic compounds using optical fibre long period grating modified with metal organic framework thin films", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96344N (28 September 2015); https://doi.org/10.1117/12.2194110

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