A laser driver circuit with signal transition enhancement is disclosed. The laser driver circuit comprises a pair of laser driver input terminals, a current modulator circuit, a transition boost circuit, and a nonlinear integrator circuit. The pair of laser driver input terminals are configured to receive a pair of differential input signals. The current modulator circuit generates a pair of current modulator output signals in accordance with the pair of differential input signals. The transition boost circuit generates a pair of transition boost signals for enhancing signal transitions of the pair of current modulator output signals. The nonlinear integrator circuit integrates the pair of transition boost signals to generate a pair of differential current output signals.