Chaos Based Secure Communication Scheme Using Voltage Controlled Oscillator and Logistic Map

We propose and experimentally demonstrate a new chaos based opto-electronic secure communication system using voltage control oscillator. The chaotic signal has been generated using a modified electronic circuit of the logistic map. The output of the chaos generator is translated to a chaotically varying instantaneous frequency of the voltage controlled oscillator (VCO). The proposed technique encodes the signal using this chaotically varying instantaneous frequency. The proposed technique has been demonstrated by using an optical fiber as a communication channel. Experimental results have been presented as a proof of concept.