Sumitomo Electric Industries’ ultra-low-loss and large-effective-area fiber cables have been selected for a data center interconnect (DCI) project connecting data center clusters in Tokyo, Kanagawa, and Chiba.
The company said that it has improved the transmission loss of terrestrial optical fiber cables using PureAdvanceTM-110, a pure-silica-core, low-loss, large effective-area (Aeff) fiber. The timing of the new cable is in line with the new demands being made in the data center community.
With increasing data traffic in trunk networks and between data centers, there is growing demand for broadband optical transport networks, and accordingly, optical fiber cables with improved performances, such as lower transmission loss, are increasingly required. Since 2017, Sumitomo Electric has been supplying the low-loss, large Aeff pure-silica-core fiber PureAdvanceTM-110 and optical fiber cables using it for terrestrial trunk transmission lines.
These fiber cables are compliant with Recommendation ITU-T G.654.E*2 and suitable for long-haul high-capacity optical signal transmissions thanks to their superior performances of low transmission loss and large Aeff.
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 PureAdvanceTM-110 has been improved from 0.17 dB/km to 0.16 dB/km or below (typical value at a wavelength of 1550 nm).
The low-loss performance of these cables enables to construct extremely low-loss transmission links including a 157 km-long section with the total loss of as low as 36 dB after deployment (including splice and connector losses). This will allow for high-capacity data transmission between data centers and reduce the number of optical repeaters, realizing reliable transmission links with reduced overall system costs.
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