Visible to the public Key Generation and Distribution Using Phase Fluctuation in Classical Fiber Channel

TitleKey Generation and Distribution Using Phase Fluctuation in Classical Fiber Channel
Publication TypeConference Paper
Year of Publication2018
AuthorsHajomer, A. A. E., Yang, X., Sultan, A., Sun, W., Hu, W.
Conference Name2018 20th International Conference on Transparent Optical Networks (ICTON)
ISBN Number978-1-5386-6605-0
Keywordsclassical fiber channel, classical optical fiber channel, cryptography, data encryption, Delay interferometer, Delay interferometer (DI), DI, Fluctuations, Human Behavior, key distribution., light interferometers, Metrics, optical amplifiers, Optical fiber amplifiers, Optical fiber dispersion, Optical fiber networks, Optical fiber polarization, optical fibre amplifiers, optical fibre dispersion, optical fibre networks, optical fibre polarisation, optical phase fluctuations, optical receivers, optical transmitters, orthogonal polarization modes, orthogonal polarization modes (OPMs), output signal extraction, pubcrawl, random key generation, random phase fluctuation, reconfigurable polarization-maintaining fiber lengths, resilience, Resiliency, Scalability, secure key distribution scheme, secure key generation scheme, standard single-mode fiber, telecommunication security, two-legal receiver, two-legal transmitter

We propose a secure key generation and distribution scheme for data encryption in classical optical fiber channel. A Delay interferometer (DI) is used to track the random phase fluctuation inside fiber, while the reconfigurable lengths of polarization-maintaining (PM) fiber are set as the source of optical phase fluctuations. The output signals from DI are extracted as the secret key and shared between the two-legal transmitter and receiver. Because of the randomness of local environment and the uniqueness of fiber channel, the phase fluctuation between orthogonal polarization modes (OPMs) can be used as secure keys to enhance the level of security in physical layer. Experimentally, we realize the random key generation and distribution over 25-km standard single-mode fiber (SSMF). Moreover, the proposed key generation scheme has the advantages of low cost, compatible with current optical fiber networks and long distance transmission with optical amplifiers.

Citation Keyhajomer_key_2018