In this work, the transverse stress response of fiber Bragg gratings in large-mode-area micro-structured Panda-type fibers
is numerically investigated. The grating wavelength shifts are studied as a function of external load and loading angle.
Simulation results indicate that introducing air holes in the fiber reduces the nonlinear response of the grating to
transverse stress. Furthermore, it is feasible to achieve the same sensitivity of gratings written in conventional Panda
fibers, focusing the stress into the fiber core.
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