Corning unveiled a single-mode optical fiber with low attenuation and low polarization mode dispersion (PMD) characteristics, enabling greater system reach and longer span lengths in long-haul and regional terrestrial networks. Corning said its new fiber, which compatible with the installed base of single-mode fibers, has the lowest loss of any terrestrial-grade fiber with maximum attenuation available between 0.17 and 0.18 dB/km at 1550 nm. Additionally, the fiber has the lowest PMD of any ITU-T G.652 compliant optical fiber featuring a ≤ 0.04...