| CPC G01R 29/0885 (2013.01) | 8 Claims |
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1. A light sensor probe, comprising:
an optical sensor unit configured to modulate an incident light depending on an intensity of an electric field or a magnetic field of a place on which the optical sensor unit is located and output the modulated light;
an input optical fiber that is connected with the optical sensor unit;
an output optical fiber that is connected with the optical sensor unit; and
a package that houses the optical sensor unit, a part of the input optical fiber and a part of the output optical fiber inside the package, wherein
an intensity change of the electric field or the magnetic field generated at a measurement place is converted into an optical signal by the optical sensor unit and the optical signal is outputted through the output optical fiber,
the package has a shielding layer formed of a material having a shielding effect for shielding the electric field or the magnetic field at least in a part of the package for preventing the electric field or the magnetic field from arriving at the optical sensor unit from the other portions than the measurement place,
the package is formed of a metal, a conductive material or an electric absorber, and
the shielding layer has an opening at a position capable of facing the measurement place so that the opening can be approached to the measurement place.
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