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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...
We experimentally demonstrated a RSOA based DDO-OFDM system using CAZAC precoding. Adaptive modulation has been simply and efficiently performed after CAZAC precoding to improve the sensitivity and overall data rate thanks to the equalized SNR.
Direct detection optical orthogonal frequency division multiplexing (DDO-OFDM) transmission with constant amplitude zero autocorrelation (CAZAC) sequence equalization is proposed and experimentally demonstrated. Simulation results show that more than 2-dB peak-to-average power ratio (PAPR) reduction can be realized using CAZAC equalization, and 50-km standard single mode fiber (SSMF) transmission...
We propose a novel ultra-broadband reconfigurable photonic harmonic mixer functioning as a millimeter-wave down-converter for multigigabit wireless applications. Based on frequency conversion implemented by an optical frequency comb generator, the photonic mixer is able to operate up to 100GHz without high frequency RF components. The feasibility of the approach is experimentally validated by down-converting...
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