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Proceedings Paper

Towards private optical communications with mid infrared chaotic light
Author(s): F. Grillot; O. Spitz; A. Herdt; W. Elsäßer; M. Carras
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Paper Abstract

Free-space optics constitutes a growing technology offering higher bandwidth with fast and cost-effective deployment compared to fiber technology. Multiple applications are envisioned like private communications. In such a case, the secret message is encoded into a chaotic waveform from which the information is extremely hard for an eavesdropper to extract. For free-space optics applications, the operating wavelength is an important parameter that has to be chosen wisely to reduce the impact of the environmental parameters. In this context, quantum cascade lasers are highly relevant semiconductor lasers because the lasing wavelength can be properly adjusted in the mid-infrared domain, typically at wavelengths for which the atmosphere is highly transparent. The simplest way to generate a chaotic optical carrier from a quantum cascade laser is to feed back part of its emitted light into the device after a certain time delay, beyond which chaos synchronization between the drive and the response lasers occurs. In this paper, we discuss about how quantum cascade laser's chaos can be used to develop private communication lines. We also give realistic perspectives for further developing mid-infrared private communications using chaotic waves.

Paper Details

Date Published: 31 January 2020
PDF: 9 pages
Proc. SPIE 11288, Quantum Sensing and Nano Electronics and Photonics XVII, 112881P (31 January 2020); doi: 10.1117/12.2546582
Show Author Affiliations
F. Grillot, LTCI, Télécom ParisTech, Institut Polytechnique de Paris (France)
Univ. of New Mexico (United States)
O. Spitz, LTCI, Télécom ParisTech, Institut Polytechnique de Paris (France)
mirSense (France)
A. Herdt, Technische Univ. Darmstadt (Germany)
W. Elsäßer, Technische Univ. Darmstadt (Germany)
M. Carras, mirSense (France)

Published in SPIE Proceedings Vol. 11288:
Quantum Sensing and Nano Electronics and Photonics XVII
Manijeh Razeghi; Jay S. Lewis; Giti A. Khodaparast; Pedram Khalili, Editor(s)

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