Temperature-Monitored Fibre Optic Current Sensor Using Channelled-Spectrum Analysis

• Type: Article in International Scientific Journal
• Date: 2022

Authors

Robalinho, P (Author) Other; Melo, M (Author) Other; Frazao, O (Author) FCUP; Ribeiro, ABL (Author) Other

Journal

Title: IEEE Photonics Technology Letters

Vol. 34

Pages: 1308-1310

ISSN: 1041-1135

Publisher: IEEE

Indexing

ISI Web of Knowledge - 0 Citations

Other information

Authenticus ID: P-00X-9J1

DOI: 10.1109/lpt.2022.3214105

Abstract (EN): The fibre optic current sensor demonstrated here uses the intrinsic temperature and wavelength dependence of the Verdet constant of a terbium gallium garnet (TGG) magneto-optic material and the two micro-optic linear polarizers attached, to simultaneously extract the values of temperature and the optical Faraday rotation (induced by the presence of the magnetic field due an electric current on a conductor) without any extra optical component attached to the optical sensor head. The simultaneous measurement is achieved by illuminating the sensor head with a broadband optical source and by careful signal processing of the originated channelled-spectrum, compensate the sensor's temperature dependence.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 3