Task 1 activities (FDDI-grade/OM2/OM3 fiber model) Potential improvements to the 81-fiber model for FDDI-grade MMF identified: “kink” perturbations – some relevant index-profile data has been identified and shared within the Task additional central/edge perturbations – the effect of an additional central perturbation is under investigation and preliminary results have been generated and shared scaling – the suggestion of scaling the 81 fibers to the OFL BWL specification, rather than a worst-case DMD, is under investigation and preliminary results have been generated and shared OM3 Monte-Carlo model adjusted for 1.3-mm operation and released FDDI-grade Monte-Carlo model in preparation