654 fiber is a single-mode fiber with a pure silica core, designed to minimize loss at a wavelength of 1550 nm. It was developed in the mid-1980s for long-distance submarine optical fiber systems, as it offers about 10% less loss than G. E, support high-capacity long-haul terrestrial networks. If you have any questions or inquiries, please. Why is the fate of the G. E fibre fundamentally different from that of the G. E, allow for the provision of an additional network margin that can be leveraged to enable reliable, high-data-rate transmissions over longer spans and extended reach. E were introduced and have been extensively deployed worldwide.