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Proceedings Paper

Realization of a fiber optic sensor detecting the presence of a liquid
Author(s): B. Guzowski; M. Łakomski; K. Nowogrodzki
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Paper Abstract

Over the past thirty years, optical fibers have revolutionized the telecommunication market. Fiber optics play also important roles in other numerous applications. One of these applications is fiber sensing – very fast developing area. In this paper, realization of different configurations of a fiber optic sensor detecting the presence of liquid is presented. In the presented sensor, two multimode fibers (MMF) are placed opposite each other, where the first one transmits the light radiation, while the second one is a receiver. Due to the small size of the core (50 μm diameter), they had to be precisely positioned. Therefore the optical fibers were placed in the etched channels in the silicon substrate.

In order to make sensors more sensitive, ball-lensed optical fibers were used. Four different diameters of lenses were examined. Sensitivity to the presence of liquids was compared in all realized sensors. Moreover, the influence of distance between the transmitting and receiving optical fiber on the received optical power is also described in this paper. All developed sensors were tested at 1300 nm wavelength. In the last part of this paper the detailed discussion is given.

Paper Details

Date Published: 10 November 2016
PDF: 6 pages
Proc. SPIE 10161, 14th International Conference on Optical and Electronic Sensors, 101610J (10 November 2016); doi: 10.1117/12.2245777
Show Author Affiliations
B. Guzowski, Lodz Univ. of Technology (Poland)
M. Łakomski, Lodz Univ. of Technology (Poland)
K. Nowogrodzki, Lodz Univ. of Technology (Poland)

Published in SPIE Proceedings Vol. 10161:
14th International Conference on Optical and Electronic Sensors
Piotr Jasiński, Editor(s)

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