The dispersion equation of depolarized-guided acoustic wave Brillouin scattering (De-GAWBS) in photonic crystal fiber was numerically solved. The relationship of Brillouin frequency shift with pump wavelength and air hole filling fraction was studied. The dependency of De-GAWBS frequency shift on temperature

tensile strain

acoustic modes

the core diameter of photonic crystal fiber

and the number of air hole layers was investigated. The Brillouin frequency shift decreases linearly with the wavelength increasing

and the transverse velocity of acoustic wave decreases with the increasing of the air hole filling fraction at the same wavelength. The De-GAWBS frequency shift increases linearly with the increasing of temperature and strain. The frequency shift of the higher order torsional-radial mode is more sensitive in the same temperature condition

and the frequency shift of the lower order torsional-radial mode is more sensitive in the same tensile strain condition. The resonance frequency shift increases with the core diameter increasing and decreases with the number of layers of air hole increasing.