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

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

来源：Optics Letters, 2013, 38(20): 4062-4065.

DOI：10.1364/OL.38.004062

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.

• 出版日期2013-10-15