Design and development of multi-sensor based on all fiber NXN twisted plastic optical fiber

J. L. de la Cruz-González; I. Ramírez-Águila; H. Santiago-Hernández; B. Bravo-Medina; A. Mora-Nuñez; J. L. Flores; G. García-Torales; O. Pottiez

doi:10.1117/12.2594038

1 August 2021 Design and development of multi-sensor based on all fiber NXN twisted plastic optical fiber

J. L. de la Cruz-González, I. Ramírez-Águila, H. Santiago-Hernández, B. Bravo-Medina, A. Mora-Nuñez, J. L. Flores, G. García-Torales, O. Pottiez

Author Affiliations +

Proceedings Volume 11830, Infrared Remote Sensing and Instrumentation XXIX; 1183003 (2021) https://doi.org/10.1117/12.2594038
Event: SPIE Optical Engineering + Applications, 2021, San Diego, California, United States

Abstract

A 3X3 plastic optical fiber (POF) twisted coupler has been fabricated as a compact sensor of multiple variables. The POFs are twisted into a combined body and the clad was removed by chemical method. Three LEDs of red, green, and blue colors can be used to shape a broad spectrum. Each led was connected at a different input port of the coupler. Since the twisted coupler makes the coupling of light from the input ports, we have a wide spectrum at each one output port. We develop a different sensor at each one output coupler: mass concentration (At the output-1), and curvature (At the output-2). The multi-sensing proposed in this work can increase the number of sensors as increase the number of output ports, and the bandwidth increase as increase the colors of light sources. On the other hand, we can use a wide spectrum lamp in a single input port and in the same way make multiple sensors in the output ports. The variation is evident in all wavelengths of the spectrum for measurements of sugar concentrations and fiber curvature. However, we can directly associate the sugar concentration variations with the spectrum in a range from 570 to 600 nm; and across the full spectrum for curvature measurements.

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J. L. de la Cruz-González, I. Ramírez-Águila, H. Santiago-Hernández, B. Bravo-Medina, A. Mora-Nuñez, J. L. Flores, G. García-Torales, and O. Pottiez "Design and development of multi-sensor based on all fiber NXN twisted plastic optical fiber", Proc. SPIE 11830, Infrared Remote Sensing and Instrumentation XXIX, 1183003 (1 August 2021); https://doi.org/10.1117/12.2594038

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