Citation:
J. Hromadka; B. Tokay; S. James; S. Korposh. Metal-organic framework thin films on a surface of optical fibre long period grating for chemical sensing. 25th International Conference on Optical Fiber Sensors, OFS 2017; 24-28 April 2017, Jeju; South Korea. Paper number: 103234C
Abstract:
An optical fibre long period grating (LPG) modified with a thin film of HKUST-1, a material from metal organic framework (MOF) family, was employed for the detection of carbon dioxide. The sensing mechanism is based on the measurement of the change of the refractive index (RI) of the coating that is induced by the penetration of CO2 molecules into the HKUST-1 pores. The responses of the resonance bands in the transmission spectrum of an LPG modified with 40 layers of HKUST-1 upon exposure to carbon dioxide in mixture with nitrogen were investigated.
