The effect of coupling on two high frequency modulated semiconductor lasers is numerically studied. The phase diagrams and bifurcatio.n diagrams are drawn. As the coupling constant is increased the system goes from chaotic to periodic behavior through a reverse period doubling sequence. The Lyapunov exponent is calculated to characterize chaotic and periodic regions.
T. Kuruvilla and Dr. V . M. Nandakumaran, “Suppression of chaos through reverse period doubling in coupled directly modulated semiconductor lasers”, Physics Letters A, vol. 254, pp. 59–64, 1999.