Sensing properties of tapered optical fiber coated with atactic polystyrene thin film

Jing Yao; Haihu Yu; Yangjie Li; Huazhang Yu; Yuze Zhu; Jianxia Liu

doi:10.1117/12.2548418

20 December 2019 Sensing properties of tapered optical fiber coated with atactic polystyrene thin film

Jing Yao, Haihu Yu, Yangjie Li, Huazhang Yu, Yuze Zhu, Jianxia Liu

Proceedings Volume 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019); 112092L (2019) https://doi.org/10.1117/12.2548418
Event: Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 2019, Xi'an, China

Abstract

Tapered optical fiber-based interferometric sensors have potential applications in some fields for the measurements of solution concentration, refractive index, biomolecules, etc. By coating specific functional film onto the surface of a tapered optical fiber, it is possible to further extend the detection range and enhance the measurement sensitivity. In this paper, a tapered optical fiber sensor based on Mach-Zehnder modal interference is studied. An atactic polystyrene thin film was used as a functional layer to coat onto the surface of the tapered region. Detection of aqueous glucose of different concentrations was carried out using the tapered fiber sensor with or without the coating. The experimental results show that the measurement sensitivity can be significantly improved by coating the atactic polystyrene thin film onto the tapered fiber with suitable waist parameter.

Citation Download Citation

Jing Yao, Haihu Yu, Yangjie Li, Huazhang Yu, Yuze Zhu, and Jianxia Liu "Sensing properties of tapered optical fiber coated with atactic polystyrene thin film", Proc. SPIE 11209, Eleventh International Conference on Information Optics and Photonics (CIOP 2019), 112092L (20 December 2019); https://doi.org/10.1117/12.2548418

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