Abstract
Free-space optical (FSO) communication provides rapidly deployable, dynamic communication links that are capable of very high data rates compared with those of radio-frequency systems. As such, FSO communication is ideal for mobile platforms, for platforms that require the additional security afforded by the narrow divergence of a laser beam, and for systems that must be deployed in a relatively short time frame. In clear-weather conditions the data rate and utility of FSO communication links are primarily limited by fading caused by microscale atmospheric temperature variations that create parts-per-million refractive-index fluctuations known as atmospheric turbulence. Typical communication techniques to overcome turbulence-induced fading, such as interleavers with sophisticated codes, lose viability as the data rate is driven higher or the delay tolerance is driven lower. This paper, along with its companion [J. Opt. Commun. Netw. 4, 947 (2012)], present communication systems and techniques that exploit atmospheric reciprocity to overcome turbulence that are viable for high data rate and low delay tolerance systems. Part I proves that reciprocity is exhibited under rather general conditions and derives the optimal power-transfer phase compensation for far-field operation. Part II presents capacity-achieving architectures that exploit reciprocity to overcome the complexity and delay issues that limit state-of-the-art FSO communications.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Jeffrey H. Shapiro and Andrew L. Puryear
J. Opt. Commun. Netw. 4(12) 947-954 (2012)
Kostas P. Peppas, Argyris N. Stassinakis, Hector E. Nistazakis, and George S. Tombras
J. Opt. Commun. Netw. 5(9) 1032-1042 (2013)
Abir Touati, Abderrazak Abdaoui, Farid Touati, Murat Uysal, and Ammar Bouallegue
J. Opt. Commun. Netw. 8(10) 715-725 (2016)