Invited talk “Implementation of Injection-locked Fabry Perot Lasers as Activation Units in Photonic Neural Networks” presented at Laser, Optics and Photonics World Forum (Optics-2022), Porto, Portugal, April 21-23, 2022. The main result is applicability of adaptive nonlinear node proposed within ORCA-LAB project as activation unit in all-optical perceptron for binary classification.