Photonic sensor of liquids based on suspended-core fibres

Barbara Wajnchold; Michal Grabka; Szymon Pustelny; Wojciech Gawlik; Pawel Mergo

doi:10.1117/12.924061

25 April 2012 Photonic sensor of liquids based on suspended-core fibres

Barbara Wajnchold, Michal Grabka, Szymon Pustelny, Wojciech Gawlik, Pawel Mergo

Proceedings Volume 8426, Microstructured and Specialty Optical Fibres; 84261M (2012) https://doi.org/10.1117/12.924061
Event: SPIE Photonics Europe, 2012, Brussels, Belgium

Abstract

The small size of the core (about 1 μm) of the suspended-core optical fibres gives rise to evanescent wave in the surrounding channels. That process allows efficient coupling between light and liquid introduced into the channels and application of the fibre for analytic purposes. In the presented work, the channels of a suspended-core fibre were filled with water and aqueous solutions of oxazine 725 perchlorate and their absorption spectra were measured. While the spectra of the water-filled fibre were consistent with the Lambert-Beer law, the absorptivity of the fibre filled with oxazine 725 perchlorate solution demonstrated an increased sensitivity caused by aggregation of the oxazine molecules, independent on the fibre length.

Citation Download Citation

Barbara Wajnchold, Michal Grabka, Szymon Pustelny, Wojciech Gawlik, and Pawel Mergo "Photonic sensor of liquids based on suspended-core fibres", Proc. SPIE 8426, Microstructured and Specialty Optical Fibres, 84261M (25 April 2012); https://doi.org/10.1117/12.924061

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