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Project
Chaotische vrijloop laser dioden als lichtbronnen in een praktisch en generiek Gbps chaos-gebaseerd data-communicatie systeem (FWOTM804)
Flexibility and security are essential aspects for communication, but they are also tricky to combine as they tend to oppose each other, often leading to a difficult trade-off. Here, I want to overcome this hurdle and reconcile flexibility and security.
In previous work, I showed that a certain type of laser diodes can emit, on their own, light with chaotic polarization fluctuations. Interestingly, similar lasers can be coupled and generate identical fluctuations: they synchronize easily. The chaotic signal can then be used to encrypt messages on the fly at high-speed: two parties synchronizing their local lasers onto the same chaos generator can encrypt/decrypt messages using the identical chaotic signal.
In state-of-the-art chaos-based systems, synchronization is difficult to achieve and requires devices that are almost identical. This constitutes the main security feature but also imposes a small network size with fixed architecture. In the pioneering scheme I propose, all lasers can exhibit significant differences and still easily synchronize. It means that anyone can connect to the network, but also that the whole network architecture can be re-arranged on demand. With hundreds or thousands of chaos generators on the network, it becomes impossible to identify which one people are using to communicate, especially if they can frequently switch from one to another. This strategy is suitable for large networks, but, even better, the larger the network, the safer it becomes.
In previous work, I showed that a certain type of laser diodes can emit, on their own, light with chaotic polarization fluctuations. Interestingly, similar lasers can be coupled and generate identical fluctuations: they synchronize easily. The chaotic signal can then be used to encrypt messages on the fly at high-speed: two parties synchronizing their local lasers onto the same chaos generator can encrypt/decrypt messages using the identical chaotic signal.
In state-of-the-art chaos-based systems, synchronization is difficult to achieve and requires devices that are almost identical. This constitutes the main security feature but also imposes a small network size with fixed architecture. In the pioneering scheme I propose, all lasers can exhibit significant differences and still easily synchronize. It means that anyone can connect to the network, but also that the whole network architecture can be re-arranged on demand. With hundreds or thousands of chaos generators on the network, it becomes impossible to identify which one people are using to communicate, especially if they can frequently switch from one to another. This strategy is suitable for large networks, but, even better, the larger the network, the safer it becomes.
Datum:1 okt 2015 → 31 okt 2021
Trefwoorden:electromagnetic
Disciplines:Optica, elektromagnetische theorie