252 km Repeaterless 10 Gbit/s Transmission Demonstration

Abstract

Using a practical erbium-doped fiber postamplifier, a dual-stage optical preamplifier, a lithium niobate Mach-Zehnder external modulator and a dispersion-shifted line fiber, we achieve the longest reported IM/DD repeaterless transmission distance of 252 km at 10 Gbit/s with a wavelength independent receiver sensitivity in the 1530-1565 nm range.