Temperature coefficient of the high-frequency guided acoustic mode in a photonic crystal fiber

High-frequency guided acoustic Brillouin modes have recently been observed in small-core silica photonic crystal fibers. In this paper, we investigate the temperature dependence of the optical sideband frequency generated by one of these guided acoustic waves. The experimental results show a tempera...

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Published inApplied optics. Optical technology and biomedical optics Vol. 50; no. 35; p. 6543
Main Authors Carry, Emile, Beugnot, Jean-Charles, Stiller, Birgit, Lee, Min W, Maillotte, Hervé, Sylvestre, Thibaut
Format Journal Article
LanguageEnglish
Published United States 10.12.2011
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Summary:High-frequency guided acoustic Brillouin modes have recently been observed in small-core silica photonic crystal fibers. In this paper, we investigate the temperature dependence of the optical sideband frequency generated by one of these guided acoustic waves. The experimental results show a temperature coefficient of 100 kHz/°C at an acoustic resonance frequency of 1.15 GHz and are in very good agreement with the theoretical predictions. This coefficient demonstrates a temperature sensitivity 10 times larger than that previously reported in conventional single-mode fibers, which is promising in view of potential applications to optical fiber sensors.
ISSN:2155-3165
DOI:10.1364/ao.50.006543