Resumen
Based on the Faraday effect for measuring ac current, we describe a fiber-optic sensor that uses laserdiode intensity modulation to perform heterodyne signal detection. The sensor output at the carrier frequency is used as a reference signal to normalize the results. The sensing element consists of a few coils low-birefringence fibers between polarizers. We built the current sensor described above and tested its performance—sensitivity and noise—as functions of the angle between polarizers.
Idioma original | Inglés |
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Páginas (desde-hasta) | 2808-2811 |
Número de páginas | 4 |
Publicación | Applied Optics |
Volumen | 38 |
N.º | 13 |
DOI | |
Estado | Publicada - 1 may. 1999 |
Publicado de forma externa | Sí |