Spun fibres: a quasi circularly birefringent medium

Ana Gabriela Correa-Mena; Xu Cheng; Luc Thévenaz

doi:10.1117/12.2679782

23 May 2023 Spun fibres: a quasi circularly birefringent medium

Ana Gabriela Correa-Mena, Xu Cheng, Luc Thévenaz

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126432P (2023) https://doi.org/10.1117/12.2679782
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

A simplified model describing the polarisation characteristics of spun fibres is proposed, aiming at determining how close to a circularly birefringent medium such a fibre is. This is of crucial importance regarding the interest of such a medium for magneto-optic sensing using optical fibres, mostly exploited in fibre optics current sensors (FOCS). The spun fibre is modelled as a stack of thin linearly birefringent plates, each experiencing a slight incremental rotation. The eigenvalues and eigenvectors of the full stack of plates are determined, enabling us to assess how far a given spun fibre is from an ideal circularly birefringent medium for any spinning rate and linear birefringence. Experimental validation is carried out to compare the model results with real fibres.

Citation Download Citation

Ana Gabriela Correa-Mena, Xu Cheng, and Luc Thévenaz "Spun fibres: a quasi circularly birefringent medium", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126432P (23 May 2023); https://doi.org/10.1117/12.2679782

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