Adaptive all-optical sigmoid activation functions for Photonic Neural Networks using Fabry-Perot laser diodes under optical injection. - Petar Atanasijevic; Christos Pappas; Mladen Banovic; Jasna V. Crnjanski; Apostolos Tsakyridis; Miltiadis Moralis-Pegios; Konstantinos Vyrsokinos; Marko M. Krstic; Peda Mihailovic; Slobodan Petricevic; Nikos Pleros; Dejan M. Gvozdic (OFC, 2024)