NDLI: High data rate quantum noise protected encryption over long distances

Content Provider	IEEE Xplore Digital Library
Author	Banwell, T. Toliver, P. Young, J.C. Hodge, J. Rauch, M. Goodman, M.S. Kanter, G. Conrdorf, E. Grigoryan, V.S. Liang, C. Kumar, P.
Copyright Year	2005
Description	Author affiliation: Telcordia Technol. (Banwell, T.; Toliver, P.; Young, J.C.; Hodge, J.; Rauch, M.; Goodman, M.S.)
Abstract	We report on a new physical layer optical encryption approach based on quantum noise limited optical signals and M-ary optical phase shift keying that operates at high data rates. In contrast to established encryption methods that rely solely on deterministic algorithms, this system utilizes quantum noise to realize a randomized cipher. Keyed M-ary optical phase modulation is used to encrypt quantum-noise limited mesoscopic signals (50k photons/bit) that are compatible with current directions in optical networking: the physically encrypted signals may be optically amplified, routed through optical switches, and can propagate over long distances approaching 1000 km. We describe the approach in detail and report on results of experiments in which these encrypted signals were transmitted over an 850 km network at 622 Mb/s. Bit-error rate measurements were performed under varying network conditions. Our paper concludes with the engineering challenges for extending this approach to 2.5 Gb/s and beyond and how these are being addressed
Starting Page	398
Ending Page	404
File Size	2650419
Page Count	7
File Format	PDF
ISBN	0780393937
DOI	10.1109/MILCOM.2005.1605716
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2005-10-17
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Protection Cryptography Optical noise Optical modulation Stimulated emission Optical fiber networks Physical layer Phase noise Phase shift keying Phase modulation
Content Type	Text
Resource Type	Article

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