Abstract

We report the results of 50G, 100G, 200G, 400G un- repeatered transmission aimed at achieving the longest distance without any inline active elements, this system realizes record single-carrier 50 Gb/s (PM-BPSK), 100 Gb/s (PS-QPSK), 200 Gb/s (PM-8QAM) and 400 Gb/s (PM-64QAM) unrepeatered transmission over 670.64 km with 103.95 dB span loss, 653.35 km with 101.27 dB span loss, 601.93 km with 93.3 dB span loss, and 502.13 km with 77.83 dB span loss, respectively. This is achieved using optimized high-order Raman pumps, cascaded RGUs and coherent modulation format with concatenated FEC. G.654.E fiber with ultra-low loss & 130 μm² effective area is used as span fiber.

Ultra-long unrepeatered transmission over 607 km at 100G and 632 km at 10G

Do-il Chang, Philippe Perrier, Herve Fevrier, Sergejs Makovejs, Christopher Towery, Xiaotie Jia, Li Deng, and Bozhong Li
Opt. Express 23(19) 25028-25033 (2015)

Unrepeatered 256 Gb/s PM-16QAM transmission over up to 304 km with simple system configurations

John D. Downie, Jason Hurley, Ioannis Roudas, Dragan Pikula, and Jorge A. Garza-Alanis
Opt. Express 22(9) 10256-10261 (2014)

Record 500 km unrepeatered 1 Tbit/s (10x100G) transmission over an ultra-low loss fiber

Vladimir Gainov, Nikolay Gurkin, Sergey Lukinih, Sergejs Makovejs, Sergey Akopov, Sergey Ten, Oleg Nanii, Vladimir Treshchikov, and Mikhail Sleptsov
Opt. Express 22(19) 22308-22313 (2014)

Transmission of single-carrier 400G signals (515.2-Gb/s) based on 128.8-GBaud PDM QPSK over 10,130- and 6,078 km terrestrial fiber links

Junwen Zhang, Jianjun Yu, Benyuan Zhu, Fan Li, Hung-Chang Chien, Zhensheng Jia, Yi Cai, Xinying Li, Xin Xiao, Yuan Fang, and Yuanquan Wang
Opt. Express 23(13) 16540-16545 (2015)

1306-km 20x124.8-Gb/s PM-64QAM Transmission over PSCF with Net SEDP 11,300 (b∙km)/s/Hz using 1.15 samp/symb DAC

A. Nespola, S. Straullu, G. Bosco, A. Carena, J. Yanchao, P. Poggiolini, F. Forghieri, Y. Yamamoto, M. Hirano, T. Sasaki, J. Bauwelinck, and K. Verheyen
Opt. Express 22(2) 1796-1805 (2014)