Abstract
This article presents results of research on an optical fiber current sensor with external conversion (OFCS-EC). The sensor setup presented in the scope of this paper was developed from the optical fiber magnetic field sensor. The OFCSEC works on the principle of Faraday effect. Therefore, the active element of the sensor was made of the reliable glass showing high Verdet constant. The sensor was characterized by its sensitivity in a optoelectronic current transformer setup for static magnetic field. Investigations presented in this paper are focused on checking, whether parameters of the OFCS-EC are stable during long term measurements. The results of those investigations have proven excellent stability of the proposed OFCS-EC.
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