Adapted from Habart et al. (2024). Schematic diagram illustrating the different components observed in the AIB surface brightness profile perpendicular to the Orion Bar. These components are shown for filter F335M (same as in Fig. 2). In this study, we focus on modelling the first steep increase at the IF position, followed by a slower decrease indicated by the red line. The positions of DF1, DF2, and DF3 correspond to peaks in H₂ emission.