Fig. 3: Analysis of the Lyapunov exponents at 85 mA.

a Largest Lyapunov exponent as a function of the feedback ratio. b Lyapunov spectrum at the feedback ratio of −4.2 dB.

a Largest Lyapunov exponent as a function of the feedback ratio. b Lyapunov spectrum at the feedback ratio of −4.2 dB.