Artículos de revistas
Sensor diferencial de fibra optica
Autor
GALINDO CAVAZOS, M. L.
GARCÍA WEIDNER, A.
GARCÍA ZARATE, M. A.
KHOMENKO , A. V.
TAPIA MERCADO, J.
Institución
Resumen
EN ESTE TRABAJO SE DESCRIBE UN SENSOR DIFERENCIAL DE TEMPERATURA QUE USA LA TÉCNICA DE LA INTERFEROMETRIA DE BAJA COHERENCIA CON PROCESAMIENTO DE SEÑALES BASADO EN EL BARRIDO DE FASE. EL SENSOR INCLUYE UN INTERFEROMETRO COMPENSADO FORMADO POR DOS SECCIONES DE FIBRA ALTAMENTE BIRREFRINGENTE, ADEMÁS DE UN ESQUEMA POLARIMETRICO QUE INCLUYE UN PRISMA WOLLASTON Y UN POLARIZADOR QUE PERMITE TENER LA INTERFERENCIA ENTRE DOS MODOS ORTOGONALES DE POLARIZACIÓN DE LA FIBRA HB. EL SENSOR PERMITE LA MEDICION DE LA DIFERENCIA DE TEMPERATURA ENTRE DOS PUNTOS CON ALTA SENSIBILIDAD. EL SENSOR PROPUESTO PUEDE SER UTILIZADO EN CALORIMETRIA PARA LA MEDICIÓN DE POTENCIA DE LÁSERES. SE DESCRIBE LA ESTRUCTURA DEL SENSOR, EL MÉTODO DE PROCESAMIENTO DE SEÑALES Y SE PRESENTAN RESULTADOS EXPERIMENTALES.AbstractA DIFFERENTIAL TEMPERATURE SENSOR EMPLOYING A LOW-COHERENCE INTERFEROMETRY TECHNIQUE WITH SIGNAL PROCESSING BASED ON PHASE SCANNING IS DESCRIBED. THE SENSOR IS COMPOSED OF A COMPENSATED INTERFEROMETER FORMED BY TWO SECTIONS OF A HIGH-BIREFRINGENCE FIBER AND A POLARIMETRIC SCHEME, WHICH INCLUDESWOLLASTON PRISM AND POLARIZER, PERMITTING THE INTERFERENCE BETWEEN TWO ORTHOGONALLY POLARIZATION MODES. THE SENSOR ALLOWS THE MEASUREMENTS OF THE DIFFERENCE IN TEMPERATURE, BETWEEN TWO POINTS WITH HIGH SENSITIVITY. THE SENSOR CAN BE USED IN CALORIMETRY FOR LASER POWER MEASUREMENTS. THE DETAILS OF THE SENSOR CONFIGURATION AND SIGNAL PROCESSING METHOD ALONG WITH EXPERIMENTAL RESULTS ARE DESCRIBED. A DIFFERENTIAL TEMPERATURE SENSOR EMPLOYING A LOW-COHERENCE INTERFEROMETRY TECHNIQUE WITH SIGNAL PROCESSING BASED ON PHASE SCANNING IS DESCRIBED. THE SENSOR IS COMPOSED OF A COMPENSATED INTERFEROMETER FORMED BY TWO SECTIONS OF A HIGH-BIREFRINGENCE FIBER AND A POLARIMETRIC SCHEME, WHICH INCLUDESWOLLASTON PRISM AND POLARIZER, PERMITTING THE INTERFERENCE BETWEEN TWO ORTHOGONALLY POLARIZATION MODES. THE SENSOR ALLOWS THE MEASUREMENTS OF THE DIFFERENCE IN TEMPERATURE, BETWEEN TWO POINTS WITH HIGH SENSITIVITY. THE SENSOR CAN BE USED IN CALORIMETRY FOR LASER POWER MEASUREMENTS. THE DETAILS OF THE SENSOR CONFIGURATION AND SIGNAL PROCESSING METHOD ALONG WITH EXPERIMENTAL RESULTS ARE DESCRIBED.