| 摘要 |
<p>PURPOSE:To facilitate the sensitivity adjustment by providing a magneto-optical element between a polarizer and an analyzer having an optical bias of 45 deg. each other, and placing a magnetic field detecting part in which optical fibers of an input and an output are connected in one direction. CONSTITUTION:An iron core 3 having a wide slot 1 is positioned by two pieces of L-shaped guide claws 7a running along a side face of the slot 1 and the outside peripheral surface of the iron core 3, and fixed to the upper face of the front end of a fixed base 7. Also, a magnetic field detecting part 6 in which two pieces of input/output optical fibers 5 are connected in one direction is loaded on a height adjusting spacer 8 guided by the guide claw 7a, and installed in the fixed base 7 by a fixing band 9. In this state, when a current flows to a conductor 4, a magnetic field H is generated in the slot 1 formed in a magnetic path consisting of the iron core 3. Subsequently, the magnetic field detecting part 6 adjusts a variance of its sensitivity by the spacer 8, and thereafter, fixed to the fixed base 7. In this regard, it is executed by only adjusting a position in its axial direction by the spacer 8. In such a way, the sensitivity adjustment can be executed easily.</p> |
