All-fiber optical magnetic-field sensor based on Faraday rotation in highly terbium-doped fiber.
An all-fiber optical magnetic field sensor is demonstrated. It consists of a fiber Faraday rotator and a fiber polarizer. The fiber Faraday rotator uses a 2-cm-long section of 56-wt.%-terbium-doped silicate fiber with a Verdet constant of -24.5 rad/(Tm) at 1053 nm. The fiber polarizer is Corning SP1060 single-polarization fiber. The sensor has a sensitivity of 0.49 rad/T and can measure magnetic fields from 0.02 to 3.2 T.
Sun
L
L
Laboratory for Laser Energetics, University of Rochester, 250 East River Rd, Rochester, NY 14623, USA. lsun@lle.rochester.edu
Jiang
S
S
Marciante
J R
JR
D004574:Electromagnetic Fields; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005336:Fiber Optic Technology / Q000295:instrumentation*; D008280:Magnetics / Q000295:instrumentation*; D055096:Optical Devices; D011874:Radiometry / Q000295:instrumentation*; D013725:Terbium; D014159:Transducers
D013725:Terbium