Investigation of curvature sensitivity of arc-induced long-period fiber gratings inscribed in a pure silica photonic crystal fiber with two large air holes in the outer cladding region

Arc-Induced Long-Period Fiber Gratings at INESC TEC. Part II: Properties and Applications in Optical Communications and Sensing

“…LPFGs are sensitive to other parameters such as strain [ 105 , 106 , 107 , 108 ], bending [ 109 , 110 , 111 ], torsion [ 112 , 113 , 114 ], pressure [ 115 , 116 ] and surrounding refractive index [ 89 , 117 , 118 , 119 , 120 , 121 , 122 , 123 , 124 ]. On contrary to what happens for the temperature sensitivity, the strain sensitivity is typically an order of magnitude lower than for FBGs.…”