SUBMICROAMPERE-PER-ROOT-HERTZ CURRENT SENSOR-BASED ON THE FARADAY-EFFECT IN GAYIG

Authors
ROSE AH DEETER MN DAY GW
Citation
Ah. Rose et al., SUBMICROAMPERE-PER-ROOT-HERTZ CURRENT SENSOR-BASED ON THE FARADAY-EFFECT IN GAYIG, Optics letters, 18(17), 1993, pp. 1471-1473
Citations number
13
Categorie Soggetti
Optics
Journal title
Optics letters → ACNP
ISSN journal
01469592
Volume
18
Issue
17
Year of publication
1993
Pages
1471 - 1473
Database
ISI
SICI code
0146-9592(1993)18:17<1471:SCSOTF>2.0.ZU;2-1
Abstract
We demonstrate an optical current sensor that is based on the Faraday effect in gallium-substituted yttrium iron garnet and has a measured s ensitivity of approximately 3-degrees/A, a noise-equivalent current of approximately 220 nA/square-root Hz, and a -3-dB bandwidth of approxi mately 2.6 MHz. The bandwidth-sensitivity product is a factor of appro ximately 10 greater than that of an all-silica-fiber current sensor wi th the same diameter.