Measurements of intermodal sensitivity of a two-mode holey fiber to strain, temperature, and hydrostatic pressure

M. Kadulová; P. Hlubina; J. Olszewski; T. Martynkien; P. Mergo; W. Urbańczyk

doi:10.1117/12.2025799

20 May 2013 Measurements of intermodal sensitivity of a two-mode holey fiber to strain, temperature, and hydrostatic pressure

M. Kadulová, P. Hlubina, J. Olszewski, T. Martynkien, P. Mergo, W. Urbańczyk

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Proceedings Volume 8794, Fifth European Workshop on Optical Fibre Sensors; 87940O (2013) https://doi.org/10.1117/12.2025799
Event: Fifth European Workshop on Optical Fibre Sensors, 2013, Krakow, Poland

Abstract

The intermodal sensitivity of a two-mode birefringent holey fiber to strain, temperature and hydrostatic pressure is measured in the spectral domain. In an experimental setup comprising a broadband source, a polarizer, a twomode birefringent holey fiber under a variable physical parameter, an analyzer and a compact spectrometer, the spectral interferograms are resolved. These are characterized by the equalization wavelength at which spectral interference fringes have the largest period due to the zero group optical path difference between the fundamental, the LP₀₁ mode and the higher-order, the LP₁₁ mode. The spectral interferograms are processed to retrieve the phase as a function of the wavelength. From the retrieved phase functions corresponding to different values of the physical parameter, the intermodal sensitivity as a function of wavelength is obtained. Using this approach, the intermodal sensitivity to strain, temperature and hydrostatic pressure is measured for two orthogonal (x and y) polarizations.

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M. Kadulová, P. Hlubina, J. Olszewski, T. Martynkien, P. Mergo, and W. Urbańczyk "Measurements of intermodal sensitivity of a two-mode holey fiber to strain, temperature, and hydrostatic pressure", Proc. SPIE 8794, Fifth European Workshop on Optical Fibre Sensors, 87940O (20 May 2013); https://doi.org/10.1117/12.2025799

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KEYWORDS

Temperature metrology

Polarization

Fiber optics sensors

Interferometry

Optical fibers

Spectroscopy

Sensors

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