Massive individual orbital angular momentum channels for multiplexing enabled by Dammann gratings
Ting Lei, Meng Zhang, Yuru Li, Ping Jia, Gordon Ning Liu, Xiaogeng Xu, Zhaohui Li, Changjun Min, Jiao Lin, Changyuan Yu, Hanben Niu, Xiaocong Yuan
Light: Science & Applications | CHINESE ACAD SCIENCES, CHANGCHUN INST OPTICS FINE MECHANICS AND PHYSICS | Published : 2015
Data transmission rates in optical communication systems are approaching the limits of conventional multiplexing methods. Orbital angular momentum (OAM) in optical vortex beams offers a new degree of freedom and the potential to increase the capacity of free-space optical communication systems, with OAM beams acting as information carriers for OAM division multiplexing (OAM-DM). We demonstrate independent collinear OAM channel generation, transmission and simultaneous detection using Dammann optical vortex gratings (DOVGs). We achieve 80/160 Tbit s capacity with uniform power distributions along all channels, with 1600 individually modulated quadrature phase-shift keying (QPSK)/16-QAM data ..View full abstract
Awarded by National Natural Science Foundation of China
Awarded by Ministry of Science and Technology of China under National Basic Research Program of China (973)
This work was partially supported by the National Natural Science Foundation of China under Grant numbers 61036013, 61138003, 61427819, 61001101 and 61435006. XY acknowledges support from the Ministry of Science and Technology of China under National Basic Research Program of China (973) grant no. 2015CB352004.