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28 August 2019 Polarimetric sensitivity to torsion and temperature in highly birefringent spun side-hole fibers
Dominik Kowal, Gabriela Statkiewicz-Barabach, Marta Beanas, Mariusz Makara, Lidia Czyzewska, Pawel Mergo, Waclaw Urbanczyk
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Proceedings Volume 11199, Seventh European Workshop on Optical Fibre Sensors; 1119909 (2019) https://doi.org/10.1117/12.2539572
Event: Seventh European Workshop on Optical Fibre Sensors, 2019, Limassol, Cyprus
Abstract
Abstract: We report on experimental studies of polarimetric sensitivity to torsion and temperature in a series of spun highly birefringent side-hole fibers with spin pitches ranging from 5 to 200 mm. The polarimetric sensitivities to torsion and temperature were measured by monitoring a displacement of the spectral interference fringes arising in the output signal because of interference of ellipticaly polarized modes. The experimental results show that the sensitivity to torsion normalized to the fringe width in the spun highly birefringent fibers increases asymptotically with the twist rate to the value of 1/π rad-1 . In contrast to the torsional sensitivity, the temperature sensitivity decays asymptotically to zero with increasing fiber twist rate. Therefore, the spun fibers with short spin pitches are especially well suited for torsion measurements because the torsional sensitivity is enhanced in such fibers while at the same time the cross-sensitivity to temperature is reduced.
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Dominik Kowal, Gabriela Statkiewicz-Barabach, Marta Beanas, Mariusz Makara, Lidia Czyzewska, Pawel Mergo, and Waclaw Urbanczyk "Polarimetric sensitivity to torsion and temperature in highly birefringent spun side-hole fibers", Proc. SPIE 11199, Seventh European Workshop on Optical Fibre Sensors, 1119909 (28 August 2019); https://doi.org/10.1117/12.2539572
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KEYWORDS
Optical fibers
Polarimetry
Birefringence
Photonics
Polarization
Sensors
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