
US Patent Application No: 2001/0009,364
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Current measuring method and device
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Jul 26, 2001
Publication date -
Feb 2, 2001
filing date -
09/776,487
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Abstract
A method of determining the magnitude of an exceptionally large current which comprises measuring the angle of rotation of polarized light in a magnetic field created by the current with a glass fiber sensor composed of a fluoride glass having a low Verdet constant and a photoelastic coefficient not over about 0.25 (nm/cm)/(kg/cm.sup.2).
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