Integration of OAM and WDM in optical wireless system by radial uniform circular array

• Published in: Optics communications Vol. 424; pp. 159 - 162
• Main Authors: Gou, Pengqi, Kong, Miao, Yang, Guo-Min, Guo, Zhi-Gui, Zhang, Jiao, Han, Xifeng, Xiao, Jiangnan, Yu, Jianjun
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01-10-2018
• Subjects: Optical wireless integration; Orbital angular momentum (OAM); Radial uniform circular array; Radio over fiber (RoF); Wavelength division multiplexing (WDM); Optical wireless integration; Radio over fiber (RoF); Wavelength division multiplexing (WDM); Orbital angular momentum (OAM); Radial uniform circular array
• ISSN: 0030-4018; 1873-0310
• DOI: 10.1016/j.optcom.2018.04.059

We propose and experimentally demonstrate a novel network architecture to realize fiber and wireless orbital angular momentum (OAM) integration. Each mode of the OAM generated by a radial uniform circular array (UCA) is used to carry the signals from a WDM channel. We demonstrate a MIMO-free 900 Mbit/s fiber–wireless link using two independent OAM beams at 5.9 GHz carrier frequency. Both OAM channels are recovered with bit-error rates below 3.8×10−3. Also results show that weak crosstalk exists at 5.9 GHz employing the proposed antenna with isolation of different channels more than 10 dB.
•We propose and demonstrate a novel architecture to realize fiber and wireless orbital angular momentum integration.•Dual mode wireless OAM transmission is realized by a radial uniform circular array.•We demonstrate a 900 Mbit/s fiber–wireless link using two OAM beams at 5.9 GHz with BER below 3.8×10−3.