Measurements of Verdet constant in heavy metal oxide glasses for magneto-optic fiber current sensors

We investigate the Verdet constant in selected heavy metal oxide glasses with good rheological properties for multiple thermal processing. The measurement results prove that lead-bismuth-gallate and tellurite glasses have Verdet constant of 69.33 rad T−1m−1 and 54.91 rad T−1m−1, respectively, at a w...

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Bibliographic Details
Published in:Optical materials 2022-01, Vol.123, p.111942, Article 111942
Main Authors: Barczak, Kamil, Cimek, Jarosław, Stępień, Ryszard, Buczyński, Ryszard
Format: Article
Language:English
Subjects:
Faraday effect
Magneto-optic materials
Magneto-optic sensors
Soft glasses
Verdet constant
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Summary:We investigate the Verdet constant in selected heavy metal oxide glasses with good rheological properties for multiple thermal processing. The measurement results prove that lead-bismuth-gallate and tellurite glasses have Verdet constant of 69.33 rad T−1m−1 and 54.91 rad T−1m−1, respectively, at a wavelength of 475 nm. These magneto-optic responses are higher than in the case of pure silica or other commercially available soft glasses used in optical fiber development. The investigated glasses are potential candidates for all-fiber optical current sensors with enhanced sensitivity and resolution. [Display omitted] •Verdet constant of heavy metal oxide glasses was determined•Investigated glasses are good candidate to build optical fiber current sensors•The dispersion of magnetooptic response is measured
ISSN:0925-3467
1873-1252
DOI:10.1016/j.optmat.2021.111942