Frequency-selective excitation of guided acoustic modes in a photonic crystal 
fiber

Stiller, Birgit; Delqué, M.; Beugnot, J.-C.; Lee, M. W.; Mélin, G.; Maillotte, H.; Laude, V.; Sylvestre, T.

doi:10.1364/OE.19.007689

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Frequency-selective excitation of guided acoustic modes in a photonic crystal fiber

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Stiller, B., Delqué, M., Beugnot, J.-C., Lee, M. W., Mélin, G., Maillotte, H., et al. (2011). Frequency-selective excitation of guided acoustic modes in a photonic crystal fiber. Optics Express, 19(8), 7689-7694. doi:10.1364/OE.19.007689.

Cite as: http://hdl.handle.net/21.11116/0000-0004-B6CD-8

Abstract

We present experimental and numerical results demonstrating the simultaneous frequency-selective excitation of several guided acoustic Brillouin modes in a photonic crystal fiber with a multi-scale structure design. These guided acoustic modes are identified by using a full vector finite-element model to result from elastic radial vibrations confined by the wavelength-scale air-silica microstructure. We further show the strong impact of structural irregularities of the fiber on the frequency and modal shape of these acoustic resonances.