Configuration of nonlinear couplers for creation of random optical multipulses

Abstract

 In this paper, a configuration of nonlinear couplers with different coupling lengths is presented. Based on the influence of the transmission coefficient on the nonlinear index coefficient, the interval of the input intensity to generate overlap-transmission intensity at two output ports is determined. This behavior is simulated to confirm the connection of multiple nonlinear couplers as a configuration to generate random optical multi-pulses. The simulation results give us an opportunity to modulate laser pulses for information security of wireless or free-space laser communication.