| 摘要 |
The invention refers to an optical magnetic field sensor in which a polarizer, a magneto-optical element and an analyzer whose transmission-polarization direction is made different from that of said polarizer are arranged along at least a light propagating direction to detect as an output light intensity a magnetic field to be measured, wherein a transmission path diameter of a second optical transmission line provided across said analyzer at an end of said magneto-optical element is larger than a transmission path diameter of a first optical transmission line provided across said polarizer at the other end of said magneto-optical element. <IMAGE> |
