Open Access120 Gbit/s high‐speed WDM‐QPSK free‐space optical transmission through 1 km atmospheric channel
Author(s) -
Feng Xianglian,
Wu Zhihang,
Wang Tianshu,
Jiang Huilin,
Su Yuwei,
Jiang Hexin,
Gao Shiming
Publication year - 2018
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/el.2018.5450
Subject(s) - gigabit , channel (broadcasting) , wavelength division multiplexing , transmission (telecommunications) , free space optical communication , phase shift keying , optical communication , free space , channel spacing , electronic engineering , optics , bit error rate , computer science , physics , telecommunications , engineering , wavelength
The free‐space optical communication of high‐speed 120 Gbit/s wavelength‐division multiplexing (WDM) QPSK signals is demonstrated in an outdoor atmospheric channel with a distance of about 1 km. A pair of optical terminal systems with the capture and tracking functions is used to establish the atmospheric channel. The power fluctuation through the atmospheric turbulence agrees well with the exponentiated Weibull distribution. At the BER of 3.8 × 10 −3 , the required receiving powers for the three WDM channels are similar, which are all <−15.4 dBm.