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handle: 10261/11343
[EN] We have performed the automatization of a system for the measurement of spectral attenuation in optical fibers. The system consists on an incandescent light source, a monochromator, a chopper, a coupling system to insert light into the fiber and a synchronous detection system based on a lock-in amplifier. The automatization has been made using the National Instrument's LabWindows/CVI 7.1. Depelopment Tool. With this tool we have developed the control modules of two of the instruments used (the monochromator and the lock-in amplifier), a program that allows the calibration of the full system, the measurement of the spectral attenuation of the fiber and a download of the data into an Excel file. We have also designed the Excel file that allows making the calculation of the uncertainties of the measurements.
[ES] Se ha procedido a la automatización de un sistema de medida de la atenuación espectral de fibras ópticas, compuesto por una fuente de luz de incandescencia, un monocromador, un sistema de inserción de luz en la fibra y un sistema de detección en fase con una señal producida por un chopper. La automatización se ha realizado en LabWindows/CVI 7.1 de Nacional Instruments, y se han realizado dos módulos de control de instrumentos (monocromador y amplificador lock-in) y un programa general que permite la calibración del monocromador, la medida de la atenuación y el volcado de los datos en hojas Excell. Se ha diseñado una hoja excell que recoge los datos del programa que permite el cálculo de incertidumbre para las medidas realizadas.
191 páginas.-- Proyecto fin de carrera (PTF) presentado en el Dpto. de Ingeniería Audiovisual y Comunicaciones de la Escuela Universitaria de Ingeniería Técnica de Telecomunicación de la Universidad Politécnica de Madrid (UPM) y realizado en el Dpto de Metrología del Instituto de Física Aplicada del CSIC (IFA-CSIC).
Peer reviewed
Atenuación espectral, Standards, Fibra óptica, Optical fibre, Patrones, Spectral attenuation
Atenuación espectral, Standards, Fibra óptica, Optical fibre, Patrones, Spectral attenuation
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