The changes in wavelength and attenuation of temperature insensitive long period fiber grating subjected to bends with curvatures from 0 to 4.4 m -1 are examined. The wavelength change with curvature is nonlinear and the minimum detectable curvature change is 0.03 m -1 . The changes in wavelength and attenuation of temperature insensitive long period fiber grating subjected to bends with curvatures from 0 to 4.4 m -1 are examined. The wavelength change with curvature is nonlinear and the minimum detectable curvature change is 0.03 m -1.