Open AccessDemonstration of an optical phase conjugation based dual‐hop PDM‐QPSK free‐space optical communication link
Author(s) -
Chen Junfan,
Yu Zhaoxin,
Wang Tianshu,
Liu Zhi,
Gao Shiming
Publication year - 2022
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/ell2.12421
Subject(s) - phase shift keying , polarization division multiplexing , bit error rate , physics , free space optical communication , optics , optical communication , multiplexing , keying , polarization (electrochemistry) , electronic engineering , wavelength division multiplexing , computer science , telecommunications , engineering , wavelength , channel (broadcasting) , chemistry
Abstract The dual‐hop free‐space optical (FSO) communication link for polarization‐division multiplexing quadrature phase‐shift keying (PDM‐QPSK) signals is proposed and experimentally demonstrated in an atmospheric chamber with the optical phase conjugation (OPC) compensating the turbulence‐induced signal distortions. The phase fluctuations can be effectively reduced by the OPC, as the error vector magnitudes are 10.03% and 8.28% decreased for x‐ and y‐ polarization. At the bit error rate of 1 × 10 –3 , the power penalty of the dual‐hop link with OPC is 2.85 or 2.34 dB lower than that of each polarization without OPC.