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We propose a chaos-based physically-enhanced secure scheme for orthogonal frequency division multiplexing-based passive optical network (OFDM-PON). This scheme employs a pseudorandom number sequence generated by a chaotic logistic map to control the frequencies of RF subcarriers. Due to the characteristic of chaos, these chaotic frequencies of RF subcarriers are difficult to be decrypted by an eavesdropper,...
Utilizing digital filtering-enabled signal multiplexing and de-multiplexing, we propose and demonstrate a novel cost-effective all-optical virtual private network (VPN) in digital filter multiple-access (DMFA) based passive optical networks (PONs), which not only provides dynamic establishment and cancellation of the VPN communications, but also concurrently supports multiple VPN communications. In...
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