It is discovered independently that the bend-sensitivity of long period fiber gratings(LPFGs) written by the high-frequency CO_2 laser pulses depends strongly on the bending direction.That is,the bend-sensitivities of the resonant wavelength and amplitude are various to different bend-directions.Furthermore,there are two orientations corresponding the most bend-sensitive,and other two orientations corresponding the most bend-insensitive.Based on the unique bend characteristics,it is proposed and demonstrated that a novel long period fiber grating sensor can measure the bend-curvature and determine bend-direction simultaneously.Such a bend sensor consists of two LPFGs fabricated by the high-frequency CO_2 laser pulses and one LPFG fabricated by other fabrication technique.