We report the excitation by flexural acoustic waves of an individual claddi
ng mode in a single-mode photonic crystal fiber. The propagation constant a
nd the field distributions of the mode have been investigated by use of thi
s technique. The results give the basis for developing a family of acousto-
optic devices based on photonic crystal fibers. (C) 2000 Optical Society of
America. OCIS codes: 060.0060, 060.2340, 060.2270.