Micromachined optical fiber current sensor
Visualitza/Obre
Cita com:
hdl:2117/20998
Tipus de documentArticle
Data publicació1999-10-01
Condicions d'accésAccés obert
Llevat que s'hi indiqui el contrari, els
continguts d'aquesta obra estan subjectes a la llicència de Creative Commons
:
Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
We describe a micromachined optical fiber current sensor. The sensing element consists of a squared silicon membrane (8 mm long and 20 μm thick) that has a cylindrical permanent magnet (NdFeB alloy, 3-mm diameter, 1.5 mm high) fixed on its central region. This structure allows the permanent magnet to vibrate in the presence of the magnetic field gradient generated by an ac. A linear relation between the electrical current and the magnet displacement was measured with white-light interferometry with an optical fiber low-finesse Fabry–Perot microcavity. A measurement range of 0–70 A and a minimum detectable intensity of 20 mA were obtained when distance <i>D</i> between the membrane and the electrical power line was 5 mm. The output signal directly shows a linear response with distance <i>D</i>.
CitacióHeredero, R.L. [et al.]. Micromachined optical fiber current sensor. "Applied optics", 01 Octubre 1999.
ISSN1559-128X
Versió de l'editorhttp://www.opticsinfobase.org/ao/abstract.cfm?uri=ao-38-25-5298
Col·leccions
Fitxers | Descripció | Mida | Format | Visualitza |
---|---|---|---|---|
ao-38-25-5298.pdf | 670,2Kb | Visualitza/Obre |