Deterministic chaos is ubiquitous in nature and has been observed in many fields of physics, chemistry, biology, geology and astrophysics. In particular, it has been observed in systems of interest for telecommunications such as electric circuits and lasers.
An example of electric circuit is the one introduced by Matsumoto et al. (1985) and its many variants (Chua et al., 1993; Bilotta et al., 2007; Gomes & King, 1992). Other interesting chaotic electric circuits exist, some of them reproducing chaotic systems borrowed from other fields. For example the celebrated Lorenz (1963) and Rössler (1976) systems, have been implemented as electric circuits by Cuomo and Oppenheim (1993b) and by Carroll (1995), respectively.