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Spectral-Domain Measurements of Birefringence and Sensing Characteristics of a Side-Hole Microstructured Fiber
Department of Physics, Technical University Ostrava, 17. listopadu 15, Ostrava-Poruba 708 33, Czech Republic
Institute of Physics, Wroclaw University of Technology, Wybrze˙ze Wyspiańskiego 27, Wroclaw 50-370, Poland
Laboratory of Optical Fibre Technology, Maria Curie-Sklodowska University, Pl. M. Curie-Sklodowskiej 3, Lublin 20-031, Poland
* Author to whom correspondence should be addressed.
Received: 10 July 2013; in revised form: 12 August 2013 / Accepted: 27 August 2013 / Published: 28 August 2013
Abstract: We experimentally characterized a birefringent side-hole microstructured fiber in the visible wavelength region. The spectral dependence of the group and phase modal birefringence was measured using the methods of spectral interferometry. The phase modal birefringence of the investigated fiber increases with wavelength, but its positive sign is opposite to the sign of the group modal birefringence. We also measured the sensing characteristics of the fiber using a method of tandem spectral interferometry. Spectral interferograms corresponding to different values of a physical parameter were processed to retrieve the spectral phase functions and to determine the spectral dependence of polarimetric sensitivity to strain, temperature and hydrostatic pressure. A negative sign of the polarimetric sensitivity was deduced from the simulation results utilizing the known modal birefringence dispersion of the fiber. Our experimental results show that the investigated fiber has a very high polarimetric sensitivity to hydrostatic pressure, reaching –200 rad x MPa–1 x m–1 at 750 nm.
Keywords: microstructured fibers; birefringent fibers; fiber characterization; spectral interferometry; birefringence dispersion; fiber-optic sensors; polarimetric sensitivity
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Hlubina, P.; Martynkien, T.; Olszewski, J.; Mergo, P.; Makara, M.; Poturaj, K.; Urbańczyk, W. Spectral-Domain Measurements of Birefringence and Sensing Characteristics of a Side-Hole Microstructured Fiber. Sensors 2013, 13, 11424-11438.
Hlubina P, Martynkien T, Olszewski J, Mergo P, Makara M, Poturaj K, Urbańczyk W. Spectral-Domain Measurements of Birefringence and Sensing Characteristics of a Side-Hole Microstructured Fiber. Sensors. 2013; 13(9):11424-11438.
Hlubina, Petr; Martynkien, Tadeusz; Olszewski, Jacek; Mergo, Pawel; Makara, Mariusz; Poturaj, Krzysztof; Urbańczyk, Waclaw. 2013. "Spectral-Domain Measurements of Birefringence and Sensing Characteristics of a Side-Hole Microstructured Fiber." Sensors 13, no. 9: 11424-11438.