Demonstration of Turbulence-Tolerant Free-Space Optical Communication Receiver Using Few-Mode-Fiber Coupling and Digital Combining

IEEE Summer Topical Meeting (2016)

Publication date: 2016

Authors: M. Arikawa1, T. Ishikawa1, K. Hosokawa1, S. Takahashi1, Y. Ono1, T. Ito1

1 NEC Corporation

IEEE Summer Topicals meeting, p158 (2016).


We improved the coupling efficiency to the free-space optical receiver by using a few-mode fiber with the optical signal distorted with a turbulence emulator. We demonstrated digital maximum ratio combining over 10-Gb/s BPSK transmission mitigated fading, relaxing the required transmitted power by 5 dB.