These fiber optic cables comply with ITU-T Recommendation G.654.E2 and are suitable for long-distance optical transmission of high-capacity signals thanks to their low transmission loss and high Aeff characteristics.
To achieve even lower transmission loss, Sumitomo Electric applied ultra-low-loss pure silica core fiber technologies. As a result, the transmission loss of optical fiber cables using PureAdvance™-110 has been improved from 0.17 dB/km to 0.16 dB/km or less (typical value at a wavelength of 1550 nm), making it the lowest transmission loss in the world for terrestrial cables.
Terrestrial fiber optic cables using PureAdvance™-110 have been selected for a large-area DCI project connecting clusters of data centers in Tokyo, Kanagawa, and Chiba, and delivery has been completed. The low-loss performance of these cables enables the construction of very low-loss transmission links, including a 157 km span with a total loss of only 36 dB after deployment (including losses due to splices and connectors). This will allow for high-capacity data transmission between data centers and reduce the number of optical repeaters required.
