INTERFERÓMETRO DE FIBRA APLICADO COMO SENSOR DE CURVATURAS (ALL-FIBER INTERFEROMETER APPLIED AS CURVATURE SENSOR)
Resumen
En este trabajo se presenta la fabricación y prueba de un sensor construido de fibra óptica basado en un esquema interferométrico tipo Mach-Zehnder. El sistema es construido mediante la unión consecutiva de segmentos de fibra monomodo-multilmodo-monomodo-multimodo-monomodo. Esta geometría permite separar al haz de entrada en dos trayectorias para posteriormente recombinarse y generar la interferencia de ellos. La señal de salida del dispositivo es función de la diferencia de fase de los haces y que a su vez depende de la deformación inducida por curvaturas. Los resultados indican que el arreglo posee una respuesta lineal para curvaturas de 0 hasta 1.4 m-1 con una sensitividad de -18.7352 nm/m-1 y con una desviación estándar de 0.210 nm. Adicionalmente, el sistema presentado muestra ser un componente de simple fabricación, bajo costo y con potencial aplicación de ser incorporado en sistemas reales.
Palabras Clave: Curvatura, fibra óptica, interferómetro, sensor.
Abstract
In this work, the manufacture and testing of a sensor made of fiber optics based on a Mach-Zehnder type interferometric scheme are showing. The system is building by the consecutive joining of single-mode-multilmode-single-mode-multimode-single-mode fiber segments. This geometry allows the input beam to be separated into two trajectories to recombine and generate interference from them. The device's output signal is a function of the beams' phase difference, which in turn depends on the deformation induced by curvatures. The results indicate that the array has a linear response for curvatures from 0 to 1.4 m-1 sensitivity of -18.735 nm / m-1 and a standard deviation of 0.210 nm. Additionally, the presented system shows a component of simple manufacture, low cost, and potential application of being incorporated in real systems.
Keywords: Curvature, fiber optic, interferometer, sensor.
Texto completo:
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