Brillouin frequency shift of standard optical fibers set in water vapor medium
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AuthorGalíndez Jamioy, Carlos Augusto; Madruga Saavedra, Francisco Javier; López Higuera, José Miguel
© 2010 Optical Society of America. This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.35.000028. Systematic or multiple reproduction or distribution to multiple locations via electronic or other means is prohibited and is subject to penalties under law.
Optics Letters, 2010, 35(1), 28-30
The Optical Society (OSA)
The dependence of the Brillouin frequency shift (BFS) on UV-cured acrylate coating and uncoated fibers for media that have different water vapor concentrations is experimentally investigated. The BFS is proportional to the temperature within the fiber, but it also depends on the water vapor contained in the surroundings of the fiber. A hypothesis based on the efficiency of the heat transfer due to the different humidity concentration in the media is proposed, and the temperature difference that depends on the heat transfer is quantified in standard fibers. A shift of ∼0.22 MHz for relative humidity change between 60% and 98% at 20°C is measured