title: Ultra-long unrepeatered transmission over 607 km at 100G and 632 km at 10G.
abstract: This paper reports record unrepeatered transmission results using forward and backward distributed Raman amplifications, large effective area ultra-low loss fiber and enhanced ROPAs with additional pumping fibers. Coherent 100 Gb/s with PM-QPSK modulation format and OOK 10G transmission are demonstrated over 607 km (97.2 dB) and 632 km (101.0 dB), respectively.
authors.forename: Do-il
authors.initials: DI
authors.lastname: Chang
authors.forename: Philippe
authors.initials: P
authors.lastname: Perrier
authors.forename: Herve
authors.initials: H
authors.lastname: Fevrier
authors.forename: Sergejs
authors.initials: S
authors.lastname: Makovejs
authors.forename: Christopher
authors.initials: C
authors.lastname: Towery
authors.forename: Xiaotie
authors.initials: X
authors.lastname: Jia
authors.forename: Li
authors.initials: L
authors.lastname: Deng
authors.forename: Bozhong
authors.initials: B
authors.lastname: Li