FIBRE OPTIC SENSOR BASED ON A DOUBLE PASSAGE ARRANGEMENT LOCATED IN A PHOTOREFRACTIVE CRYSTAL FOR MEASURING HIGH VOLTAGE
Described is a fibre optic sensor (FOS) for the telemetry of high voltage, which consists in a predetermined extension of multimodal fibre attached to a transduction element based on the electro optic effect using a double passage arrangement of the luminous wave by a Bi12TiO20 (BTO) photorefractive...
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Zusammenfassung: | Described is a fibre optic sensor (FOS) for the telemetry of high voltage, which consists in a predetermined extension of multimodal fibre attached to a transduction element based on the electro optic effect using a double passage arrangement of the luminous wave by a Bi12TiO20 (BTO) photorefractive crystal. A retro-reflecting prism having a high stability regarding temperature changes is included in the transduction element in order to warranty the double passage step.
Se describe un sensor de fibra optica (SFO) para telemetria de alto voltaje que esta constituido por una extension predeterminada de fibra multimodal unida a un elemento transductor basado en el efecto electrooptico con una configuracion de doble paso de la onda luminosa a traves de un cristal fotorrefractivo de Bi12TiO20 (BTO). Para garantizar el doble paso, un prisma retrorreflector con alta estabilidad a cambios ambientales de temperatura es incorporado al elemento transductor. La doble flexion de la onda luminosa en el prisma permite al BTO trabajar en una amplia region lineal de la funcion de transferencia, el sensor propuesto es robusto, lineal, estable, entre las variaciones de temperatura y de alta sensibilidad para aplicaciones de telemetria de alto voltaje. |
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