200 Gb/s per Channel Unrepeatered Transmission Over 520 km Terrestrial Fibers.

Authors :: Starykh, Dimitriy
Akopov, Sergey
Kharasov, Danil
Konyshev, Vadim
Makovejs, Sergejs
Nanii, Oleg
Shikhaliev, Igor
Treshchikov, Vladimir
Source :: IEEE Photonics Technology Letters; 11/15/2019, Vol. 31 Issue 22, p1799-1802, 4p
Publication Year :: 2019
Abstract: This letter demonstrates unrepeatered real-time transmission of 200 Gb/s (5 bit per symbol modulation format, 56.8 GBaud) signal over terrestrial 520 km single-span fiber link. This was achieved using ultra low-loss fibers with large effective area, ROPAs with dedicated fibers, and distributed Raman amplifiers with co- and counter-propagating pumps. [ABSTRACT FROM AUTHOR]