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Atmospheric turbulence effects on the performance of a free space optical link employing orbital angular momentum multiplexing

By Yongxiong Ren, Hao Huang, Guodong Xie, Nisar Ahmed, Yan Yan, Baris I. Erkmen, Nivedita Chandrasekaran, Martin P. J. Lavery, Nicholas K. Steinhoff, Moshe Tur, Samuel Dolinar, Mark Neifeld, Miles J. Padgett, Robert W. Boyd, Jeffrey H. Shapiro and Alan E. Willner


We experimentally investigate the performance of an orbital angular momentum (OAM) multiplexed free space optical (FSO) communication link through emulated atmospheric turbulence. The turbulence effects on the crosstalk and system power penalty of the FSO link are characterized. The experimental results show that the power of the transmitted OAM mode will tend to spread uniformly onto the neighboring mode in medium-to-strong turbulence, resulting in severe crosstalk at the receiver. The power penalty is found to exceed 10 dB in a weak-to-medium turbulence condition due to the turbulence-induced crosstalk and power fluctuation of the received signal

Publisher: Optical Society of America
Year: 2013
DOI identifier: 10.1364/ol.38.004062
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Provided by: Enlighten
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