Broadband optical chaos generation by constructing a simple hybrid feedback loop

An electro-optic chaos generator is proposed based on phase modulation to intensity modulation conversion and an analog-digital hybrid feedback loop. The analog part takes the digital sequences from shift registers as input and converts them into analog noise like signal, from which new bits are determined. The effective bandwidth and complexity of the output analog signal can reach a high level with properly selected system parameters. the proposed scheme has the potential for applications in optical secure communication, chaotic radar and random number generation.