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

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Carry, E., Beugnot, J.-C., Stiller, B., Lee, M. W., Maillotte, H., & Sylvestre, T. (2011). Temperature coefficient of the high-frequency guided acoustic mode in a photonic crystal fiber. APPLIED OPTICS, 50(35), 6543-6547. doi:10.1364/AO.50.006543.


Cite as: http://hdl.handle.net/21.11116/0000-0004-B5C8-E
Abstract
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/degrees C at an acoustic resonance frequency of 1.15GHz 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. (C) 2011 Optical Society of America