Title :
Experimental demonstration of free-space optical communications using OFDM-QPSK/16QAM-carrying fractional orbital angular momentum (OAM) multiplexing
Author :
Jian Wang ; Jun Liu ; Shuhui Li ; Long Zhu ; Chao Li ; Ming Luo ; Qi Yang ; Yu Shaohua
Author_Institution :
Wuhan Nat. Lab. for Optoelectron., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
We report free-space optical communications exploiting fractional orbital angular momentum (OAM) multiplexing. Using OFDM-QPSK/16QAM signals over fractional OAM beams with varied channel spacing, fractional OAM communications are demonstrated in the experiment even with a small OAM channel spacing of 0.6.
Keywords :
OFDM modulation; angular momentum; optical links; quadrature amplitude modulation; quadrature phase shift keying; wavelength division multiplexing; OAM multiplexing; OFDM-QPSK-16QAM; fractional OAM communications; fractional orbital angular momentum; free space optical communication; varied OAM channel spacing; Adaptive optics; Demultiplexing; Optical beams; Optical modulation;
Conference_Titel :
Optical Fiber Communications Conference and Exhibition (OFC), 2015
Conference_Location :
Los Angeles, CA
