Patent ID: 6404190
Filing Date: 2002-06-11
Classification: G01R,G02B

Abstract:
An optical magnetic field sensor probe for detecting a magnetic field comprising:a polarizer, a magneto-optical device, and an analyzer, said analyzer being different in transmission and polarization direction from said polarizer along a light path, said optical magnetic field sensor probe further comprising an input optical fiber at one end of said magneto-optical device across said polarizer, and an output optical fiber at another end of said magneto-optical device across said analyzer, said input optical fiber having a front end at said polarizer, said front end having one of a spherical or hemispherical shape thereby providing a lens at said front end for light exiting said input optical fiber and entering said polarizer, and said output optical fiber having a front end at said analyzer, said front end having one of a spherical or hemispherical shape thereby providing a lens at said a front end for light exiting said analyzer and entering said output optical fiber, wherein said optical fibers are bent optical fibers bent at the front end.