Title :
Experiment turbulence compensation of 50-Gbaud/s orbital-angular-momentum QPSK signals using intensity-only based SPGD algorithm
Author :
Guodong Xie ; Yongxiong Ren ; Hao Huang ; Lavery, Martin P. J. ; Ahmed, Nova ; Yan Yan ; Changjing Bao ; Long Li ; Zhe Zhao ; Yinwen Cao ; Willner, M. ; Padgett, M.J. ; Tur, Moshe ; Dolinar, Samuel J. ; Boyd, Robert W. ; Shapiro, Jeffrey H. ; Willner, Ala
Author_Institution :
Dept. of Electr. Eng., Univ. of Southern California, Los Angeles, CA, USA
Abstract :
An intensity-based algorithm is employed to derive the correction phase pattern for a distorted probe orbital-angular-momentum (OAM) beam. This correction pattern is used to compensate the distortions of three multiplexed OAM beams, each carrying a 50-Gbaud QPSK signal. The crosstalk between channels is reduced by >5 dB with this approach.
Keywords :
angular momentum; atmospheric turbulence; gradient methods; optical crosstalk; optical links; optical modulation; quadrature phase shift keying; stochastic processes; correction phase pattern; intensity-based SPGD algorithm; orbital-angular-momentum QPSK signals; quadrature phase shift keying; turbulence compensation; Bit error rate; Correlation; Crosstalk; Distortion measurement; Phase distortion; Phase measurement; Probes;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2014
Conference_Location :
San Francisco, CA
Print_ISBN :
978-1-5575-2994-7
DOI :
10.1364/OFC.2014.W1H.1
